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Finding the Fourth Proportional to 395,353.35, 593,066.43 and 129,115.26

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Solution

The fourth proportional to 395,353.35, 593,066.43 and 129,115.26 is: 193,684.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,353.35 : 593,066.43 = 129,115.26 : x
  2. Step 2: Convert to fraction form
    395,353.35/593,066.43 = 129,115.26/x
  3. Step 3: Cross multiply
    395,353.35x = 593,066.43 × 129,115.26
  4. Step 4: Simplify right side
    395,353.35x = 76,573,926,306.72
  5. Step 5: Solve for x
    x = 76,573,926,306.72/395,353.35
  6. Step 6: Final answer
    x = 193,684.78

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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.