Apportion
From ACT Wiki
1. To allocate a money amount on a time basis.
For example total profits of EUR 100,000 for a period of one year (365 days) consisting of a one month (30 days) period and an 11 months (335 days) period would be time-apportioned as follows:
One month period: EUR 100,000 x 30/365 = EUR 8,219 11 months period: EUR 100,000 x 335/365 = EUR 91,781
(This is also known as 'time-apportionment'.)
2. To allocate a money amount on any other systematic basis. For example, to allocate the total costs of a shared building on the basis of floor areas.
3. To allocate any amount on a systematic basis.
See also