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Finding the Fourth Proportional to 252,046.20, 378,069.31 and 74,539.39

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Solution

The fourth proportional to 252,046.20, 378,069.31 and 74,539.39 is: 111,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,046.20 : 378,069.31 = 74,539.39 : x
  2. Step 2: Convert to fraction form
    252,046.20/378,069.31 = 74,539.39/x
  3. Step 3: Cross multiply
    252,046.20x = 378,069.31 × 74,539.39
  4. Step 4: Simplify right side
    252,046.20x = 28,181,055,182.72
  5. Step 5: Solve for x
    x = 28,181,055,182.72/252,046.20
  6. Step 6: Final answer
    x = 111,809.09

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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.