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Finding the Third Proportional to 263,630.25 and 408,553.88

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Solution

The third proportional to 263,630.25 and 408,553.88 is: 633,145.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,630.25 : 408,553.88 = 408,553.88 : x
  2. Step 2: Convert to fraction form
    263,630.25/408,553.88 = 408,553.88/x
  3. Step 3: Cross multiply
    263,630.25x = 408,553.88 × 408,553.88
  4. Step 4: Simplify right side
    263,630.25x = 166,916,268,777.52
  5. Step 5: Solve for x
    x = 166,916,268,777.52/263,630.25
  6. Step 6: Final answer
    x = 633,145.36

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.