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Finding the Fourth Proportional to 252,849.64, 379,147.48 and 84,310.30

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Solution

The fourth proportional to 252,849.64, 379,147.48 and 84,310.30 is: 126,423.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,849.64 : 379,147.48 = 84,310.30 : x
  2. Step 2: Convert to fraction form
    252,849.64/379,147.48 = 84,310.30/x
  3. Step 3: Cross multiply
    252,849.64x = 379,147.48 × 84,310.30
  4. Step 4: Simplify right side
    252,849.64x = 31,966,037,783.04
  5. Step 5: Solve for x
    x = 31,966,037,783.04/252,849.64
  6. Step 6: Final answer
    x = 126,423.11

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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.