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Finding the Fourth Proportional to 339,391.85, 468,345.60 and 203,500.78

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Solution

The fourth proportional to 339,391.85, 468,345.60 and 203,500.78 is: 280,821.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,391.85 : 468,345.60 = 203,500.78 : x
  2. Step 2: Convert to fraction form
    339,391.85/468,345.60 = 203,500.78/x
  3. Step 3: Cross multiply
    339,391.85x = 468,345.60 × 203,500.78
  4. Step 4: Simplify right side
    339,391.85x = 95,308,694,909.57
  5. Step 5: Solve for x
    x = 95,308,694,909.57/339,391.85
  6. Step 6: Final answer
    x = 280,821.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.