Finding the Fourth Proportional to 431,679.30, 647,149.74 and 165,630.75
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Solution
The fourth proportional to 431,679.30, 647,149.74 and 165,630.75 is: 248,304.46
Step by Step Solution
- Step 1: Write the proportion equation
431,679.30 : 647,149.74 = 165,630.75 : x - Step 2: Convert to fraction form
431,679.30/647,149.74 = 165,630.75/x - Step 3: Cross multiply
431,679.30x = 647,149.74 × 165,630.75 - Step 4: Simplify right side
431,679.30x = 107,187,896,798.51 - Step 5: Solve for x
x = 107,187,896,798.51/431,679.30 - Step 6: Final answer
x = 248,304.46
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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.