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Finding the Fourth Proportional to 268,103.31, 402,154.64 and 68,423.72

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Solution

The fourth proportional to 268,103.31, 402,154.64 and 68,423.72 is: 102,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,103.31 : 402,154.64 = 68,423.72 : x
  2. Step 2: Convert to fraction form
    268,103.31/402,154.64 = 68,423.72/x
  3. Step 3: Cross multiply
    268,103.31x = 402,154.64 × 68,423.72
  4. Step 4: Simplify right side
    268,103.31x = 27,516,915,649.73
  5. Step 5: Solve for x
    x = 27,516,915,649.73/268,103.31
  6. Step 6: Final answer
    x = 102,635.49

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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.