Finding the Fourth Proportional to 309,489,261.62, 427,707,969.12 and 253,646,603.87
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Solution
The fourth proportional to 309,489,261.62, 427,707,969.12 and 253,646,603.87 is: 350,534,533.08
Step by Step Solution
- Step 1: Write the proportion equation
309,489,261.62 : 427,707,969.12 = 253,646,603.87 : x - Step 2: Convert to fraction form
309,489,261.62/427,707,969.12 = 253,646,603.87/x - Step 3: Cross multiply
309,489,261.62x = 427,707,969.12 × 253,646,603.87 - Step 4: Simplify right side
309,489,261.62x = 108,486,673,813,284,304 - Step 5: Solve for x
x = 108,486,673,813,284,304/309,489,261.62 - Step 6: Final answer
x = 350,534,533.08
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.