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Finding the Fourth Proportional to 300,806.72, 451,201.57 and 101,138.48

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Solution

The fourth proportional to 300,806.72, 451,201.57 and 101,138.48 is: 151,704.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,806.72 : 451,201.57 = 101,138.48 : x
  2. Step 2: Convert to fraction form
    300,806.72/451,201.57 = 101,138.48/x
  3. Step 3: Cross multiply
    300,806.72x = 451,201.57 × 101,138.48
  4. Step 4: Simplify right side
    300,806.72x = 45,633,840,963.41
  5. Step 5: Solve for x
    x = 45,633,840,963.41/300,806.72
  6. Step 6: Final answer
    x = 151,704.86

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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.