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Finding the Fourth Proportional to 252,847.64, 379,144.49 and 84,308.30

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Solution

The fourth proportional to 252,847.64, 379,144.49 and 84,308.30 is: 126,420.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,847.64 : 379,144.49 = 84,308.30 : x
  2. Step 2: Convert to fraction form
    252,847.64/379,144.49 = 84,308.30/x
  3. Step 3: Cross multiply
    252,847.64x = 379,144.49 × 84,308.30
  4. Step 4: Simplify right side
    252,847.64x = 31,965,027,932.59
  5. Step 5: Solve for x
    x = 31,965,027,932.59/252,847.64
  6. Step 6: Final answer
    x = 126,420.12

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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.