Finding the Fourth Proportional to 288,051.38, 431,939.05 and 136,122.02
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Solution
The fourth proportional to 288,051.38, 431,939.05 and 136,122.02 is: 204,117.80
Step by Step Solution
- Step 1: Write the proportion equation
288,051.38 : 431,939.05 = 136,122.02 : x - Step 2: Convert to fraction form
288,051.38/431,939.05 = 136,122.02/x - Step 3: Cross multiply
288,051.38x = 431,939.05 × 136,122.02 - Step 4: Simplify right side
288,051.38x = 58,796,413,502.88 - Step 5: Solve for x
x = 58,796,413,502.88/288,051.38 - Step 6: Final answer
x = 204,117.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.