Finding the Fourth Proportional to 431,934.02, 647,901.09 and 221,437.70
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Solution
The fourth proportional to 431,934.02, 647,901.09 and 221,437.70 is: 332,156.58
Step by Step Solution
- Step 1: Write the proportion equation
431,934.02 : 647,901.09 = 221,437.70 : x - Step 2: Convert to fraction form
431,934.02/647,901.09 = 221,437.70/x - Step 3: Cross multiply
431,934.02x = 647,901.09 × 221,437.70 - Step 4: Simplify right side
431,934.02x = 143,469,723,957.59 - Step 5: Solve for x
x = 143,469,723,957.59/431,934.02 - Step 6: Final answer
x = 332,156.58
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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.