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Finding the Third Proportional to 229,990 and 316,701

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Solution

The third proportional to 229,990 and 316,701 is: 436,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,990 : 316,701 = 316,701 : x
  2. Step 2: Convert to fraction form
    229,990/316,701 = 316,701/x
  3. Step 3: Cross multiply
    229,990x = 316,701 × 316,701
  4. Step 4: Simplify right side
    229,990x = 100,299,523,401
  5. Step 5: Solve for x
    x = 100,299,523,401/229,990
  6. Step 6: Final answer
    x = 436,103.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.