Finding the Fourth Proportional to 431,285.92, 647,027.30 and 131,809.08
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Solution
The fourth proportional to 431,285.92, 647,027.30 and 131,809.08 is: 197,743.70
Step by Step Solution
- Step 1: Write the proportion equation
431,285.92 : 647,027.30 = 131,809.08 : x - Step 2: Convert to fraction form
431,285.92/647,027.30 = 131,809.08/x - Step 3: Cross multiply
431,285.92x = 647,027.30 × 131,809.08 - Step 4: Simplify right side
431,285.92x = 85,284,073,147.88 - Step 5: Solve for x
x = 85,284,073,147.88/431,285.92 - Step 6: Final answer
x = 197,743.70
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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.