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Finding the Fourth Proportional to 406,250.70, 609,002.88 and 139,947.90

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Solution

The fourth proportional to 406,250.70, 609,002.88 and 139,947.90 is: 209,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,250.70 : 609,002.88 = 139,947.90 : x
  2. Step 2: Convert to fraction form
    406,250.70/609,002.88 = 139,947.90/x
  3. Step 3: Cross multiply
    406,250.70x = 609,002.88 × 139,947.90
  4. Step 4: Simplify right side
    406,250.70x = 85,228,674,149.95
  5. Step 5: Solve for x
    x = 85,228,674,149.95/406,250.70
  6. Step 6: Final answer
    x = 209,793.30

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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.