Finding the Fourth Proportional to 273,609.20, 409,757.70 and 221,121.20
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Solution
The fourth proportional to 273,609.20, 409,757.70 and 221,121.20 is: 331,151.56
Step by Step Solution
- Step 1: Write the proportion equation
273,609.20 : 409,757.70 = 221,121.20 : x - Step 2: Convert to fraction form
273,609.20/409,757.70 = 221,121.20/x - Step 3: Cross multiply
273,609.20x = 409,757.70 × 221,121.20 - Step 4: Simplify right side
273,609.20x = 90,606,114,333.24 - Step 5: Solve for x
x = 90,606,114,333.24/273,609.20 - Step 6: Final answer
x = 331,151.56
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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.