Home / 422,433.57-633,658.46-138,125.19

Finding the Fourth Proportional to 422,433.57, 633,658.46 and 138,125.19

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Solution

The fourth proportional to 422,433.57, 633,658.46 and 138,125.19 is: 207,190.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,433.57 : 633,658.46 = 138,125.19 : x
  2. Step 2: Convert to fraction form
    422,433.57/633,658.46 = 138,125.19/x
  3. Step 3: Cross multiply
    422,433.57x = 633,658.46 × 138,125.19
  4. Step 4: Simplify right side
    422,433.57x = 87,524,194,491.98
  5. Step 5: Solve for x
    x = 87,524,194,491.98/422,433.57
  6. Step 6: Final answer
    x = 207,190.43

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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.