Finding the Fourth Proportional to 431,470.26, 647,235.36 and 131,927.81
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Solution
The fourth proportional to 431,470.26, 647,235.36 and 131,927.81 is: 197,900.87
Step by Step Solution
- Step 1: Write the proportion equation
431,470.26 : 647,235.36 = 131,927.81 : x - Step 2: Convert to fraction form
431,470.26/647,235.36 = 131,927.81/x - Step 3: Cross multiply
431,470.26x = 647,235.36 × 131,927.81 - Step 4: Simplify right side
431,470.26x = 85,388,340,363.18 - Step 5: Solve for x
x = 85,388,340,363.18/431,470.26 - Step 6: Final answer
x = 197,900.87
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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.