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Finding the Fourth Proportional to 225,916.78, 338,776.73 and 76,129.15

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Solution

The fourth proportional to 225,916.78, 338,776.73 and 76,129.15 is: 114,160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,916.78 : 338,776.73 = 76,129.15 : x
  2. Step 2: Convert to fraction form
    225,916.78/338,776.73 = 76,129.15/x
  3. Step 3: Cross multiply
    225,916.78x = 338,776.73 × 76,129.15
  4. Step 4: Simplify right side
    225,916.78x = 25,790,784,685.00
  5. Step 5: Solve for x
    x = 25,790,784,685.00/225,916.78
  6. Step 6: Final answer
    x = 114,160.55

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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.