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Finding the Fourth Proportional to 268,103.43, 402,154.92 and 68,423.85

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Solution

The fourth proportional to 268,103.43, 402,154.92 and 68,423.85 is: 102,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,103.43 : 402,154.92 = 68,423.85 : x
  2. Step 2: Convert to fraction form
    268,103.43/402,154.92 = 68,423.85/x
  3. Step 3: Cross multiply
    268,103.43x = 402,154.92 × 68,423.85
  4. Step 4: Simplify right side
    268,103.43x = 27,516,987,922.84
  5. Step 5: Solve for x
    x = 27,516,987,922.84/268,103.43
  6. Step 6: Final answer
    x = 102,635.72

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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.