Finding the Fourth Proportional to 431,815.62, 647,731.53 and 147,571.23
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Solution
The fourth proportional to 431,815.62, 647,731.53 and 147,571.23 is: 221,359.61
Step by Step Solution
- Step 1: Write the proportion equation
431,815.62 : 647,731.53 = 147,571.23 : x - Step 2: Convert to fraction form
431,815.62/647,731.53 = 147,571.23/x - Step 3: Cross multiply
431,815.62x = 647,731.53 × 147,571.23 - Step 4: Simplify right side
431,815.62x = 95,586,538,591.88 - Step 5: Solve for x
x = 95,586,538,591.88/431,815.62 - Step 6: Final answer
x = 221,359.61
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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.