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Finding the Fourth Proportional to 392,766.30, 587,788.65 and 235,107.90

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Solution

The fourth proportional to 392,766.30, 587,788.65 and 235,107.90 is: 351,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,766.30 : 587,788.65 = 235,107.90 : x
  2. Step 2: Convert to fraction form
    392,766.30/587,788.65 = 235,107.90/x
  3. Step 3: Cross multiply
    392,766.30x = 587,788.65 × 235,107.90
  4. Step 4: Simplify right side
    392,766.30x = 138,193,755,145.34
  5. Step 5: Solve for x
    x = 138,193,755,145.34/392,766.30
  6. Step 6: Final answer
    x = 351,847.28

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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.