Finding the Fourth Proportional to 431,640.22, 647,586.69 and 221,424.70
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Solution
The fourth proportional to 431,640.22, 647,586.69 and 221,424.70 is: 332,201.87
Step by Step Solution
- Step 1: Write the proportion equation
431,640.22 : 647,586.69 = 221,424.70 : x - Step 2: Convert to fraction form
431,640.22/647,586.69 = 221,424.70/x - Step 3: Cross multiply
431,640.22x = 647,586.69 × 221,424.70 - Step 4: Simplify right side
431,640.22x = 143,391,688,557.24 - Step 5: Solve for x
x = 143,391,688,557.24/431,640.22 - Step 6: Final answer
x = 332,201.87
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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.