Finding the Fourth Proportional to 284,472.12, 392,557.02 and 157,123.08
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Solution
The fourth proportional to 284,472.12, 392,557.02 and 157,123.08 is: 216,821.84
Step by Step Solution
- Step 1: Write the proportion equation
284,472.12 : 392,557.02 = 157,123.08 : x - Step 2: Convert to fraction form
284,472.12/392,557.02 = 157,123.08/x - Step 3: Cross multiply
284,472.12x = 392,557.02 × 157,123.08 - Step 4: Simplify right side
284,472.12x = 61,679,768,058.02 - Step 5: Solve for x
x = 61,679,768,058.02/284,472.12 - Step 6: Final answer
x = 216,821.84
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1.5x scale
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.