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Finding the Fourth Proportional to 269,428.80, 404,110.80 and 111,640.80

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Solution

The fourth proportional to 269,428.80, 404,110.80 and 111,640.80 is: 167,447.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,428.80 : 404,110.80 = 111,640.80 : x
  2. Step 2: Convert to fraction form
    269,428.80/404,110.80 = 111,640.80/x
  3. Step 3: Cross multiply
    269,428.80x = 404,110.80 × 111,640.80
  4. Step 4: Simplify right side
    269,428.80x = 45,115,253,000.64
  5. Step 5: Solve for x
    x = 45,115,253,000.64/269,428.80
  6. Step 6: Final answer
    x = 167,447.77

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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.