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Finding the Third Proportional to 206,404.88 and 290,663.25

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Solution

The third proportional to 206,404.88 and 290,663.25 is: 409,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,404.88 : 290,663.25 = 290,663.25 : x
  2. Step 2: Convert to fraction form
    206,404.88/290,663.25 = 290,663.25/x
  3. Step 3: Cross multiply
    206,404.88x = 290,663.25 × 290,663.25
  4. Step 4: Simplify right side
    206,404.88x = 84,485,124,900.56
  5. Step 5: Solve for x
    x = 84,485,124,900.56/206,404.88
  6. Step 6: Final answer
    x = 409,317.49

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.