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Finding the Fourth Proportional to 359,545.80, 539,901.90 and 260,401.80

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Solution

The fourth proportional to 359,545.80, 539,901.90 and 260,401.80 is: 391,025.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,545.80 : 539,901.90 = 260,401.80 : x
  2. Step 2: Convert to fraction form
    359,545.80/539,901.90 = 260,401.80/x
  3. Step 3: Cross multiply
    359,545.80x = 539,901.90 × 260,401.80
  4. Step 4: Simplify right side
    359,545.80x = 140,591,426,583.42
  5. Step 5: Solve for x
    x = 140,591,426,583.42/359,545.80
  6. Step 6: Final answer
    x = 391,025.08

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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.