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Finding the Fourth Proportional to 300,728.70, 451,214.55 and 132,281.10

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Solution

The fourth proportional to 300,728.70, 451,214.55 and 132,281.10 is: 198,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,728.70 : 451,214.55 = 132,281.10 : x
  2. Step 2: Convert to fraction form
    300,728.70/451,214.55 = 132,281.10/x
  3. Step 3: Cross multiply
    300,728.70x = 451,214.55 × 132,281.10
  4. Step 4: Simplify right side
    300,728.70x = 59,687,157,010.01
  5. Step 5: Solve for x
    x = 59,687,157,010.01/300,728.70
  6. Step 6: Final answer
    x = 198,475.09

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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.