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Finding the Fourth Proportional to 425,934.40, 587,978.40 and 275,104.96

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Solution

The fourth proportional to 425,934.40, 587,978.40 and 275,104.96 is: 379,766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,934.40 : 587,978.40 = 275,104.96 : x
  2. Step 2: Convert to fraction form
    425,934.40/587,978.40 = 275,104.96/x
  3. Step 3: Cross multiply
    425,934.40x = 587,978.40 × 275,104.96
  4. Step 4: Simplify right side
    425,934.40x = 161,755,774,212.86
  5. Step 5: Solve for x
    x = 161,755,774,212.86/425,934.40
  6. Step 6: Final answer
    x = 379,766.87

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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.