Finding the Fourth Proportional to 279,818.29, 386,136.97 and 158,959.09
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Solution
The fourth proportional to 279,818.29, 386,136.97 and 158,959.09 is: 219,356.57
Step by Step Solution
- Step 1: Write the proportion equation
279,818.29 : 386,136.97 = 158,959.09 : x - Step 2: Convert to fraction form
279,818.29/386,136.97 = 158,959.09/x - Step 3: Cross multiply
279,818.29x = 386,136.97 × 158,959.09 - Step 4: Simplify right side
279,818.29x = 61,379,981,366.56 - Step 5: Solve for x
x = 61,379,981,366.56/279,818.29 - Step 6: Final answer
x = 219,356.57
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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.