Finding the Fourth Proportional to 431,491.12, 647,236.12 and 115,948.03
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Solution
The fourth proportional to 431,491.12, 647,236.12 and 115,948.03 is: 173,921.89
Step by Step Solution
- Step 1: Write the proportion equation
431,491.12 : 647,236.12 = 115,948.03 : x - Step 2: Convert to fraction form
431,491.12/647,236.12 = 115,948.03/x - Step 3: Cross multiply
431,491.12x = 647,236.12 × 115,948.03 - Step 4: Simplify right side
431,491.12x = 75,045,753,058.84 - Step 5: Solve for x
x = 75,045,753,058.84/431,491.12 - Step 6: Final answer
x = 173,921.89
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1.5x scale
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.