Finding the Fourth Proportional to 431,604.68, 647,484.78 and 132,079.88
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Solution
The fourth proportional to 431,604.68, 647,484.78 and 132,079.88 is: 198,143.62
Step by Step Solution
- Step 1: Write the proportion equation
431,604.68 : 647,484.78 = 132,079.88 : x - Step 2: Convert to fraction form
431,604.68/647,484.78 = 132,079.88/x - Step 3: Cross multiply
431,604.68x = 647,484.78 × 132,079.88 - Step 4: Simplify right side
431,604.68x = 85,519,712,044.23 - Step 5: Solve for x
x = 85,519,712,044.23/431,604.68 - Step 6: Final answer
x = 198,143.62
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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.