What does in mean?

[junair]

Does “one in three” and “one in ten” has the same meaning as “one of three” and “one of ten” in the following sentence:

We want to be reaching one in three people around the world, and we want to try to persuade one in ten of those people to become an active participant.

[nobody]

one out of three, i.e. a third, yes. One in ten of those on in three = 1/10 of 1/3 = 1/30th or about 3%.