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Finding the Fourth Proportional to 359,410.60, 539,115.90 and 289,426.60

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Solution

The fourth proportional to 359,410.60, 539,115.90 and 289,426.60 is: 434,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,410.60 : 539,115.90 = 289,426.60 : x
  2. Step 2: Convert to fraction form
    359,410.60/539,115.90 = 289,426.60/x
  3. Step 3: Cross multiply
    359,410.60x = 539,115.90 × 289,426.60
  4. Step 4: Simplify right side
    359,410.60x = 156,034,481,942.94
  5. Step 5: Solve for x
    x = 156,034,481,942.94/359,410.60
  6. Step 6: Final answer
    x = 434,139.90

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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.