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Finding the Fourth Proportional to 395,098.76, 592,705.20 and 128,793.44

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Solution

The fourth proportional to 395,098.76, 592,705.20 and 128,793.44 is: 193,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,098.76 : 592,705.20 = 128,793.44 : x
  2. Step 2: Convert to fraction form
    395,098.76/592,705.20 = 128,793.44/x
  3. Step 3: Cross multiply
    395,098.76x = 592,705.20 × 128,793.44
  4. Step 4: Simplify right side
    395,098.76x = 76,336,541,613.89
  5. Step 5: Solve for x
    x = 76,336,541,613.89/395,098.76
  6. Step 6: Final answer
    x = 193,208.76

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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.