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Finding the Fourth Proportional to 300,676.62, 451,163.12 and 140,763.38

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Solution

The fourth proportional to 300,676.62, 451,163.12 and 140,763.38 is: 211,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,676.62 : 451,163.12 = 140,763.38 : x
  2. Step 2: Convert to fraction form
    300,676.62/451,163.12 = 140,763.38/x
  3. Step 3: Cross multiply
    300,676.62x = 451,163.12 × 140,763.38
  4. Step 4: Simplify right side
    300,676.62x = 63,507,245,702.55
  5. Step 5: Solve for x
    x = 63,507,245,702.55/300,676.62
  6. Step 6: Final answer
    x = 211,214.45

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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.