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Finding the Third Proportional to 68,358 and 143,628

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Solution

The third proportional to 68,358 and 143,628 is: 301,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,358 : 143,628 = 143,628 : x
  2. Step 2: Convert to fraction form
    68,358/143,628 = 143,628/x
  3. Step 3: Cross multiply
    68,358x = 143,628 × 143,628
  4. Step 4: Simplify right side
    68,358x = 20,629,002,384
  5. Step 5: Solve for x
    x = 20,629,002,384/68,358
  6. Step 6: Final answer
    x = 301,778.90

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.