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Finding the Fourth Proportional to 300,751.76, 451,138.56 and 101,078.80

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Solution

The fourth proportional to 300,751.76, 451,138.56 and 101,078.80 is: 151,621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,751.76 : 451,138.56 = 101,078.80 : x
  2. Step 2: Convert to fraction form
    300,751.76/451,138.56 = 101,078.80/x
  3. Step 3: Cross multiply
    300,751.76x = 451,138.56 × 101,078.80
  4. Step 4: Simplify right side
    300,751.76x = 45,600,544,278.53
  5. Step 5: Solve for x
    x = 45,600,544,278.53/300,751.76
  6. Step 6: Final answer
    x = 151,621.87

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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.