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Finding the Fourth Proportional to 238,380.56, 357,616.92 and 80,634.68

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Solution

The fourth proportional to 238,380.56, 357,616.92 and 80,634.68 is: 120,967.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,380.56 : 357,616.92 = 80,634.68 : x
  2. Step 2: Convert to fraction form
    238,380.56/357,616.92 = 80,634.68/x
  3. Step 3: Cross multiply
    238,380.56x = 357,616.92 × 80,634.68
  4. Step 4: Simplify right side
    238,380.56x = 28,836,325,906.79
  5. Step 5: Solve for x
    x = 28,836,325,906.79/238,380.56
  6. Step 6: Final answer
    x = 120,967.61

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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.