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Finding the Third Proportional to 66,426 and 143,349

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Solution

The third proportional to 66,426 and 143,349 is: 309,350.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426 : 143,349 = 143,349 : x
  2. Step 2: Convert to fraction form
    66,426/143,349 = 143,349/x
  3. Step 3: Cross multiply
    66,426x = 143,349 × 143,349
  4. Step 4: Simplify right side
    66,426x = 20,548,935,801
  5. Step 5: Solve for x
    x = 20,548,935,801/66,426
  6. Step 6: Final answer
    x = 309,350.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.