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Finding the Third Proportional to 140,170 and 211,713

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Solution

The third proportional to 140,170 and 211,713 is: 319,771.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,170 : 211,713 = 211,713 : x
  2. Step 2: Convert to fraction form
    140,170/211,713 = 211,713/x
  3. Step 3: Cross multiply
    140,170x = 211,713 × 211,713
  4. Step 4: Simplify right side
    140,170x = 44,822,394,369
  5. Step 5: Solve for x
    x = 44,822,394,369/140,170
  6. Step 6: Final answer
    x = 319,771.67

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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.