Finding the Fourth Proportional to 284,475.12, 392,561.16 and 157,126.08
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Solution
The fourth proportional to 284,475.12, 392,561.16 and 157,126.08 is: 216,825.98
Step by Step Solution
- Step 1: Write the proportion equation
284,475.12 : 392,561.16 = 157,126.08 : x - Step 2: Convert to fraction form
284,475.12/392,561.16 = 157,126.08/x - Step 3: Cross multiply
284,475.12x = 392,561.16 × 157,126.08 - Step 4: Simplify right side
284,475.12x = 61,681,596,231.05 - Step 5: Solve for x
x = 61,681,596,231.05/284,475.12 - Step 6: Final answer
x = 216,825.98
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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.