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Finding the Fourth Proportional to 200,399.60, 300,634.02 and 67,292.70

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Solution

The fourth proportional to 200,399.60, 300,634.02 and 67,292.70 is: 100,950.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,399.60 : 300,634.02 = 67,292.70 : x
  2. Step 2: Convert to fraction form
    200,399.60/300,634.02 = 67,292.70/x
  3. Step 3: Cross multiply
    200,399.60x = 300,634.02 × 67,292.70
  4. Step 4: Simplify right side
    200,399.60x = 20,230,474,917.65
  5. Step 5: Solve for x
    x = 20,230,474,917.65/200,399.60
  6. Step 6: Final answer
    x = 100,950.68

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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.