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Finding the Third Proportional to 290,540.25 and 629,336.25

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Solution

The third proportional to 290,540.25 and 629,336.25 is: 1,363,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,540.25 : 629,336.25 = 629,336.25 : x
  2. Step 2: Convert to fraction form
    290,540.25/629,336.25 = 629,336.25/x
  3. Step 3: Cross multiply
    290,540.25x = 629,336.25 × 629,336.25
  4. Step 4: Simplify right side
    290,540.25x = 396,064,115,564.06
  5. Step 5: Solve for x
    x = 396,064,115,564.06/290,540.25
  6. Step 6: Final answer
    x = 1,363,198.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.