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Finding the Third Proportional to 133,909.50 and 207,255

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Solution

The third proportional to 133,909.50 and 207,255 is: 320,773.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,909.50 : 207,255 = 207,255 : x
  2. Step 2: Convert to fraction form
    133,909.50/207,255 = 207,255/x
  3. Step 3: Cross multiply
    133,909.50x = 207,255 × 207,255
  4. Step 4: Simplify right side
    133,909.50x = 42,954,635,025
  5. Step 5: Solve for x
    x = 42,954,635,025/133,909.50
  6. Step 6: Final answer
    x = 320,773.62

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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.