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Finding the Fourth Proportional to 269,808.38, 404,642.07 and 80,217.68

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Solution

The fourth proportional to 269,808.38, 404,642.07 and 80,217.68 is: 120,305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,808.38 : 404,642.07 = 80,217.68 : x
  2. Step 2: Convert to fraction form
    269,808.38/404,642.07 = 80,217.68/x
  3. Step 3: Cross multiply
    269,808.38x = 404,642.07 × 80,217.68
  4. Step 4: Simplify right side
    269,808.38x = 32,459,447,684.71
  5. Step 5: Solve for x
    x = 32,459,447,684.71/269,808.38
  6. Step 6: Final answer
    x = 120,305.56

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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.