Finding the Fourth Proportional to 361,807.70, 542,711.55 and 221,839.70
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Solution
The fourth proportional to 361,807.70, 542,711.55 and 221,839.70 is: 332,759.55
Step by Step Solution
- Step 1: Write the proportion equation
361,807.70 : 542,711.55 = 221,839.70 : x - Step 2: Convert to fraction form
361,807.70/542,711.55 = 221,839.70/x - Step 3: Cross multiply
361,807.70x = 542,711.55 × 221,839.70 - Step 4: Simplify right side
361,807.70x = 120,394,967,438.54 - Step 5: Solve for x
x = 120,394,967,438.54/361,807.70 - Step 6: Final answer
x = 332,759.55
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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.