Finding the Fourth Proportional to 431,649.80, 647,474.70 and 221,697.80
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Solution
The fourth proportional to 431,649.80, 647,474.70 and 221,697.80 is: 332,546.70
Step by Step Solution
- Step 1: Write the proportion equation
431,649.80 : 647,474.70 = 221,697.80 : x - Step 2: Convert to fraction form
431,649.80/647,474.70 = 221,697.80/x - Step 3: Cross multiply
431,649.80x = 647,474.70 × 221,697.80 - Step 4: Simplify right side
431,649.80x = 143,543,716,545.66 - Step 5: Solve for x
x = 143,543,716,545.66/431,649.80 - Step 6: Final answer
x = 332,546.70
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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.