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Finding the Fourth Proportional to 300,131.76, 450,221.22 and 100,452.84

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Solution

The fourth proportional to 300,131.76, 450,221.22 and 100,452.84 is: 150,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,131.76 : 450,221.22 = 100,452.84 : x
  2. Step 2: Convert to fraction form
    300,131.76/450,221.22 = 100,452.84/x
  3. Step 3: Cross multiply
    300,131.76x = 450,221.22 × 100,452.84
  4. Step 4: Simplify right side
    300,131.76x = 45,226,000,177.26
  5. Step 5: Solve for x
    x = 45,226,000,177.26/300,131.76
  6. Step 6: Final answer
    x = 150,687.15

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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.