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Finding the Fourth Proportional to 300,769.80, 451,251.90 and 201,042.60

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Solution

The fourth proportional to 300,769.80, 451,251.90 and 201,042.60 is: 301,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,769.80 : 451,251.90 = 201,042.60 : x
  2. Step 2: Convert to fraction form
    300,769.80/451,251.90 = 201,042.60/x
  3. Step 3: Cross multiply
    300,769.80x = 451,251.90 × 201,042.60
  4. Step 4: Simplify right side
    300,769.80x = 90,720,855,230.94
  5. Step 5: Solve for x
    x = 90,720,855,230.94/300,769.80
  6. Step 6: Final answer
    x = 301,628.87

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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.