Finding the Fourth Proportional to 257,418.88, 386,124.17 and 79,926.06
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Solution
The fourth proportional to 257,418.88, 386,124.17 and 79,926.06 is: 119,887.80
Step by Step Solution
- Step 1: Write the proportion equation
257,418.88 : 386,124.17 = 79,926.06 : x - Step 2: Convert to fraction form
257,418.88/386,124.17 = 79,926.06/x - Step 3: Cross multiply
257,418.88x = 386,124.17 × 79,926.06 - Step 4: Simplify right side
257,418.88x = 30,861,381,648.25 - Step 5: Solve for x
x = 30,861,381,648.25/257,418.88 - Step 6: Final answer
x = 119,887.80
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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.