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Finding the Fourth Proportional to 269,321.40, 404,078.54 and 115,382.79

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Solution

The fourth proportional to 269,321.40, 404,078.54 and 115,382.79 is: 173,115.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,321.40 : 404,078.54 = 115,382.79 : x
  2. Step 2: Convert to fraction form
    269,321.40/404,078.54 = 115,382.79/x
  3. Step 3: Cross multiply
    269,321.40x = 404,078.54 × 115,382.79
  4. Step 4: Simplify right side
    269,321.40x = 46,623,708,747.41
  5. Step 5: Solve for x
    x = 46,623,708,747.41/269,321.40
  6. Step 6: Final answer
    x = 173,115.50

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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.