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Finding the Fourth Proportional to 422,350.99, 633,392.35 and 137,976.73

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Solution

The fourth proportional to 422,350.99, 633,392.35 and 137,976.73 is: 206,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,350.99 : 633,392.35 = 137,976.73 : x
  2. Step 2: Convert to fraction form
    422,350.99/633,392.35 = 137,976.73/x
  3. Step 3: Cross multiply
    422,350.99x = 633,392.35 × 137,976.73
  4. Step 4: Simplify right side
    422,350.99x = 87,393,405,260.02
  5. Step 5: Solve for x
    x = 87,393,405,260.02/422,350.99
  6. Step 6: Final answer
    x = 206,921.27

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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.