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Finding the Fourth Proportional to 300,000.72, 449,849.40 and 100,251.60

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Solution

The fourth proportional to 300,000.72, 449,849.40 and 100,251.60 is: 150,326.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,000.72 : 449,849.40 = 100,251.60 : x
  2. Step 2: Convert to fraction form
    300,000.72/449,849.40 = 100,251.60/x
  3. Step 3: Cross multiply
    300,000.72x = 449,849.40 × 100,251.60
  4. Step 4: Simplify right side
    300,000.72x = 45,098,122,109.04
  5. Step 5: Solve for x
    x = 45,098,122,109.04/300,000.72
  6. Step 6: Final answer
    x = 150,326.71

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1.5x scale

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.