Finding the Fourth Proportional to 431,405.80, 647,108.70 and 221,453.80
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Solution
The fourth proportional to 431,405.80, 647,108.70 and 221,453.80 is: 332,180.70
Step by Step Solution
- Step 1: Write the proportion equation
431,405.80 : 647,108.70 = 221,453.80 : x - Step 2: Convert to fraction form
431,405.80/647,108.70 = 221,453.80/x - Step 3: Cross multiply
431,405.80x = 647,108.70 × 221,453.80 - Step 4: Simplify right side
431,405.80x = 143,304,680,628.06 - Step 5: Solve for x
x = 143,304,680,628.06/431,405.80 - Step 6: Final answer
x = 332,180.70
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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.