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Finding the Fourth Proportional to 252,290.80, 378,498.48 and 74,797.81

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Solution

The fourth proportional to 252,290.80, 378,498.48 and 74,797.81 is: 112,215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,290.80 : 378,498.48 = 74,797.81 : x
  2. Step 2: Convert to fraction form
    252,290.80/378,498.48 = 74,797.81/x
  3. Step 3: Cross multiply
    252,290.80x = 378,498.48 × 74,797.81
  4. Step 4: Simplify right side
    252,290.80x = 28,310,857,392.33
  5. Step 5: Solve for x
    x = 28,310,857,392.33/252,290.80
  6. Step 6: Final answer
    x = 112,215.18

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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.