Finding the Fourth Proportional to 431,531.19, 647,295.85 and 115,988.09
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Solution
The fourth proportional to 431,531.19, 647,295.85 and 115,988.09 is: 173,981.88
Step by Step Solution
- Step 1: Write the proportion equation
431,531.19 : 647,295.85 = 115,988.09 : x - Step 2: Convert to fraction form
431,531.19/647,295.85 = 115,988.09/x - Step 3: Cross multiply
431,531.19x = 647,295.85 × 115,988.09 - Step 4: Simplify right side
431,531.19x = 75,078,608,726.49 - Step 5: Solve for x
x = 75,078,608,726.49/431,531.19 - Step 6: Final answer
x = 173,981.88
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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.