Finding the Fourth Proportional to 313,690,639.92, 432,890,690.42 and 172,558,822.42
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Solution
The fourth proportional to 313,690,639.92, 432,890,690.42 and 172,558,822.42 is: 238,129,858.75
Step by Step Solution
- Step 1: Write the proportion equation
313,690,639.92 : 432,890,690.42 = 172,558,822.42 : x - Step 2: Convert to fraction form
313,690,639.92/432,890,690.42 = 172,558,822.42/x - Step 3: Cross multiply
313,690,639.92x = 432,890,690.42 × 172,558,822.42 - Step 4: Simplify right side
313,690,639.92x = 74,699,107,775,455,968 - Step 5: Solve for x
x = 74,699,107,775,455,968/313,690,639.92 - Step 6: Final answer
x = 238,129,858.75
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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.