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Finding the Fourth Proportional to 268,896.83, 403,251.16 and 79,306.87

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Solution

The fourth proportional to 268,896.83, 403,251.16 and 79,306.87 is: 118,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,896.83 : 403,251.16 = 79,306.87 : x
  2. Step 2: Convert to fraction form
    268,896.83/403,251.16 = 79,306.87/x
  3. Step 3: Cross multiply
    268,896.83x = 403,251.16 × 79,306.87
  4. Step 4: Simplify right side
    268,896.83x = 31,980,584,910.68
  5. Step 5: Solve for x
    x = 31,980,584,910.68/268,896.83
  6. Step 6: Final answer
    x = 118,932.55

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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.