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Finding the Fourth Proportional to 252,350.97, 378,605.40 and 74,858.91

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Solution

The fourth proportional to 252,350.97, 378,605.40 and 74,858.91 is: 112,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,350.97 : 378,605.40 = 74,858.91 : x
  2. Step 2: Convert to fraction form
    252,350.97/378,605.40 = 74,858.91/x
  3. Step 3: Cross multiply
    252,350.97x = 378,605.40 × 74,858.91
  4. Step 4: Simplify right side
    252,350.97x = 28,341,987,564.11
  5. Step 5: Solve for x
    x = 28,341,987,564.11/252,350.97
  6. Step 6: Final answer
    x = 112,311.78

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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.