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Finding the Fourth Proportional to 425,711.43, 587,584.13 and 255,912.75

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Solution

The fourth proportional to 425,711.43, 587,584.13 and 255,912.75 is: 353,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,711.43 : 587,584.13 = 255,912.75 : x
  2. Step 2: Convert to fraction form
    425,711.43/587,584.13 = 255,912.75/x
  3. Step 3: Cross multiply
    425,711.43x = 587,584.13 × 255,912.75
  4. Step 4: Simplify right side
    425,711.43x = 150,370,269,285.09
  5. Step 5: Solve for x
    x = 150,370,269,285.09/425,711.43
  6. Step 6: Final answer
    x = 353,221.12

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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.