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Finding the Fourth Proportional to 268,747.40, 403,179.41 and 81,754.04

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Solution

The fourth proportional to 268,747.40, 403,179.41 and 81,754.04 is: 122,648.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,747.40 : 403,179.41 = 81,754.04 : x
  2. Step 2: Convert to fraction form
    268,747.40/403,179.41 = 81,754.04/x
  3. Step 3: Cross multiply
    268,747.40x = 403,179.41 × 81,754.04
  4. Step 4: Simplify right side
    268,747.40x = 32,961,543,187.65
  5. Step 5: Solve for x
    x = 32,961,543,187.65/268,747.40
  6. Step 6: Final answer
    x = 122,648.79

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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.