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Finding the Fourth Proportional to 359,414.20, 539,315.70 and 149,073.40

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Solution

The fourth proportional to 359,414.20, 539,315.70 and 149,073.40 is: 223,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,414.20 : 539,315.70 = 149,073.40 : x
  2. Step 2: Convert to fraction form
    359,414.20/539,315.70 = 149,073.40/x
  3. Step 3: Cross multiply
    359,414.20x = 539,315.70 × 149,073.40
  4. Step 4: Simplify right side
    359,414.20x = 80,397,625,072.38
  5. Step 5: Solve for x
    x = 80,397,625,072.38/359,414.20
  6. Step 6: Final answer
    x = 223,690.73

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1.5x scale

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.