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Finding the Fourth Proportional to 252,067.72, 378,151.26 and 72,154.84

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Solution

The fourth proportional to 252,067.72, 378,151.26 and 72,154.84 is: 108,246.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,067.72 : 378,151.26 = 72,154.84 : x
  2. Step 2: Convert to fraction form
    252,067.72/378,151.26 = 72,154.84/x
  3. Step 3: Cross multiply
    252,067.72x = 378,151.26 × 72,154.84
  4. Step 4: Simplify right side
    252,067.72x = 27,285,443,661.10
  5. Step 5: Solve for x
    x = 27,285,443,661.10/252,067.72
  6. Step 6: Final answer
    x = 108,246.48

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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.