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Finding the Fourth Proportional to 268,375.90, 402,563.59 and 68,695.97

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Solution

The fourth proportional to 268,375.90, 402,563.59 and 68,695.97 is: 103,043.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,375.90 : 402,563.59 = 68,695.97 : x
  2. Step 2: Convert to fraction form
    268,375.90/402,563.59 = 68,695.97/x
  3. Step 3: Cross multiply
    268,375.90x = 402,563.59 × 68,695.97
  4. Step 4: Simplify right side
    268,375.90x = 27,654,496,301.73
  5. Step 5: Solve for x
    x = 27,654,496,301.73/268,375.90
  6. Step 6: Final answer
    x = 103,043.89

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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.