Finding the Fourth Proportional to 424,521.20, 636,781.68 and 125,001.80
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Solution
The fourth proportional to 424,521.20, 636,781.68 and 125,001.80 is: 187,502.66
Step by Step Solution
- Step 1: Write the proportion equation
424,521.20 : 636,781.68 = 125,001.80 : x - Step 2: Convert to fraction form
424,521.20/636,781.68 = 125,001.80/x - Step 3: Cross multiply
424,521.20x = 636,781.68 × 125,001.80 - Step 4: Simplify right side
424,521.20x = 79,598,856,207.02 - Step 5: Solve for x
x = 79,598,856,207.02/424,521.20 - Step 6: Final answer
x = 187,502.66
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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.