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Finding the Fourth Proportional to 252,331.58, 378,498.78 and 74,839.92

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Solution

The fourth proportional to 252,331.58, 378,498.78 and 74,839.92 is: 112,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,331.58 : 378,498.78 = 74,839.92 : x
  2. Step 2: Convert to fraction form
    252,331.58/378,498.78 = 74,839.92/x
  3. Step 3: Cross multiply
    252,331.58x = 378,498.78 × 74,839.92
  4. Step 4: Simplify right side
    252,331.58x = 28,326,818,415.30
  5. Step 5: Solve for x
    x = 28,326,818,415.30/252,331.58
  6. Step 6: Final answer
    x = 112,260.30

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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.