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Finding the Fourth Proportional to 379,002.60, 568,404.90 and 112,691.40

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Solution

The fourth proportional to 379,002.60, 568,404.90 and 112,691.40 is: 169,007.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,002.60 : 568,404.90 = 112,691.40 : x
  2. Step 2: Convert to fraction form
    379,002.60/568,404.90 = 112,691.40/x
  3. Step 3: Cross multiply
    379,002.60x = 568,404.90 × 112,691.40
  4. Step 4: Simplify right side
    379,002.60x = 64,054,343,947.86
  5. Step 5: Solve for x
    x = 64,054,343,947.86/379,002.60
  6. Step 6: Final answer
    x = 169,007.66

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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.