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Finding the Fourth Proportional to 267,905.69, 401,858.52 and 80,917.19

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Solution

The fourth proportional to 267,905.69, 401,858.52 and 80,917.19 is: 121,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,905.69 : 401,858.52 = 80,917.19 : x
  2. Step 2: Convert to fraction form
    267,905.69/401,858.52 = 80,917.19/x
  3. Step 3: Cross multiply
    267,905.69x = 401,858.52 × 80,917.19
  4. Step 4: Simplify right side
    267,905.69x = 32,517,262,215.96
  5. Step 5: Solve for x
    x = 32,517,262,215.96/267,905.69
  6. Step 6: Final answer
    x = 121,375.78

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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.