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Finding the Fourth Proportional to 395,761.60, 593,753.19 and 129,708.95

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Solution

The fourth proportional to 395,761.60, 593,753.19 and 129,708.95 is: 194,599.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,761.60 : 593,753.19 = 129,708.95 : x
  2. Step 2: Convert to fraction form
    395,761.60/593,753.19 = 129,708.95/x
  3. Step 3: Cross multiply
    395,761.60x = 593,753.19 × 129,708.95
  4. Step 4: Simplify right side
    395,761.60x = 77,015,099,378.88
  5. Step 5: Solve for x
    x = 77,015,099,378.88/395,761.60
  6. Step 6: Final answer
    x = 194,599.73

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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.