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Finding the Third Proportional to 138,558 and 297,837

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Solution

The third proportional to 138,558 and 297,837 is: 640,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,558 : 297,837 = 297,837 : x
  2. Step 2: Convert to fraction form
    138,558/297,837 = 297,837/x
  3. Step 3: Cross multiply
    138,558x = 297,837 × 297,837
  4. Step 4: Simplify right side
    138,558x = 88,706,878,569
  5. Step 5: Solve for x
    x = 88,706,878,569/138,558
  6. Step 6: Final answer
    x = 640,214.77

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.