To work out the proportion, you need to convert the pint into millilitres. There are 568.261485ml in a pint. Thus we want the proportion 240/568.261485. This is roughly 1/2.37.
http://wiki.answers.com/Q/What_is_240ml_of_a_pint

1 First, let's put these two units of measurement in perspective. When doing this English to metric conversion, keep in mind that a pint or kilo is heavier, way, way heavier, than
http://www.ehow.com/how_5605506_convertpintsptm...

There are 473 milliliters in 1 pint!
http://www.chacha.com/question/howmanymlarein...

3500 ml = 3.5 litres. 1 litre = 1.76 pints. 3.5 litres = 3.5 * 1.76 = 6.16 (2 dp) pints. OR use a conversion chart. http://www.circlecity.co.uk/kitchen/conv….
http://answers.yahoo.com/question/index?qid=201202...
