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Finding the Fourth Proportional to 252,169.02, 378,308.88 and 74,689.92

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Solution

The fourth proportional to 252,169.02, 378,308.88 and 74,689.92 is: 112,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,169.02 : 378,308.88 = 74,689.92 : x
  2. Step 2: Convert to fraction form
    252,169.02/378,308.88 = 74,689.92/x
  3. Step 3: Cross multiply
    252,169.02x = 378,308.88 × 74,689.92
  4. Step 4: Simplify right side
    252,169.02x = 28,255,859,982.49
  5. Step 5: Solve for x
    x = 28,255,859,982.49/252,169.02
  6. Step 6: Final answer
    x = 112,051.27

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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.