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Finding the Fourth Proportional to 325,793.40, 488,517.30 and 115,438.20

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Solution

The fourth proportional to 325,793.40, 488,517.30 and 115,438.20 is: 173,096.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,793.40 : 488,517.30 = 115,438.20 : x
  2. Step 2: Convert to fraction form
    325,793.40/488,517.30 = 115,438.20/x
  3. Step 3: Cross multiply
    325,793.40x = 488,517.30 × 115,438.20
  4. Step 4: Simplify right side
    325,793.40x = 56,393,557,780.86
  5. Step 5: Solve for x
    x = 56,393,557,780.86/325,793.40
  6. Step 6: Final answer
    x = 173,096.07

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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.