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Finding the Third Proportional to 140,270 and 211,861

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Solution

The third proportional to 140,270 and 211,861 is: 319,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,270 : 211,861 = 211,861 : x
  2. Step 2: Convert to fraction form
    140,270/211,861 = 211,861/x
  3. Step 3: Cross multiply
    140,270x = 211,861 × 211,861
  4. Step 4: Simplify right side
    140,270x = 44,885,083,321
  5. Step 5: Solve for x
    x = 44,885,083,321/140,270
  6. Step 6: Final answer
    x = 319,990.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.