Finding the Fourth Proportional to 431,865.98, 647,893.74 and 132,369.09
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Solution
The fourth proportional to 431,865.98, 647,893.74 and 132,369.09 is: 198,582.68
Step by Step Solution
- Step 1: Write the proportion equation
431,865.98 : 647,893.74 = 132,369.09 : x - Step 2: Convert to fraction form
431,865.98/647,893.74 = 132,369.09/x - Step 3: Cross multiply
431,865.98x = 647,893.74 × 132,369.09 - Step 4: Simplify right side
431,865.98x = 85,761,102,102.70 - Step 5: Solve for x
x = 85,761,102,102.70/431,865.98 - Step 6: Final answer
x = 198,582.68
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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.