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Finding the Fourth Proportional to 225,917.41, 338,777.67 and 76,129.78

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Solution

The fourth proportional to 225,917.41, 338,777.67 and 76,129.78 is: 114,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,917.41 : 338,777.67 = 76,129.78 : x
  2. Step 2: Convert to fraction form
    225,917.41/338,777.67 = 76,129.78/x
  3. Step 3: Cross multiply
    225,917.41x = 338,777.67 × 76,129.78
  4. Step 4: Simplify right side
    225,917.41x = 25,791,067,792.12
  5. Step 5: Solve for x
    x = 25,791,067,792.12/225,917.41
  6. Step 6: Final answer
    x = 114,161.49

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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.