Finding the Fourth Proportional to 312,865,552.55, 431,754,935.45 and 169,811,366.96
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Solution
The fourth proportional to 312,865,552.55, 431,754,935.45 and 169,811,366.96 is: 234,339,943.09
Step by Step Solution
- Step 1: Write the proportion equation
312,865,552.55 : 431,754,935.45 = 169,811,366.96 : x - Step 2: Convert to fraction form
312,865,552.55/431,754,935.45 = 169,811,366.96/x - Step 3: Cross multiply
312,865,552.55x = 431,754,935.45 × 169,811,366.96 - Step 4: Simplify right side
312,865,552.55x = 73,316,895,780,721,392 - Step 5: Solve for x
x = 73,316,895,780,721,392/312,865,552.55 - Step 6: Final answer
x = 234,339,943.09
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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.