Finding the Fourth Proportional to 431,775.72, 647,706.78 and 132,252.84
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Solution
The fourth proportional to 431,775.72, 647,706.78 and 132,252.84 is: 198,392.49
Step by Step Solution
- Step 1: Write the proportion equation
431,775.72 : 647,706.78 = 132,252.84 : x - Step 2: Convert to fraction form
431,775.72/647,706.78 = 132,252.84/x - Step 3: Cross multiply
431,775.72x = 647,706.78 × 132,252.84 - Step 4: Simplify right side
431,775.72x = 85,661,061,142.26 - Step 5: Solve for x
x = 85,661,061,142.26/431,775.72 - Step 6: Final answer
x = 198,392.49
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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.