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Finding the Third Proportional to 144,990 and 319,401

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Solution

The third proportional to 144,990 and 319,401 is: 703,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,990 : 319,401 = 319,401 : x
  2. Step 2: Convert to fraction form
    144,990/319,401 = 319,401/x
  3. Step 3: Cross multiply
    144,990x = 319,401 × 319,401
  4. Step 4: Simplify right side
    144,990x = 102,016,998,801
  5. Step 5: Solve for x
    x = 102,016,998,801/144,990
  6. Step 6: Final answer
    x = 703,614.03

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.