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Finding the Third Proportional to 140,117 and 210,317

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Solution

The third proportional to 140,117 and 210,317 is: 315,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,117 : 210,317 = 210,317 : x
  2. Step 2: Convert to fraction form
    140,117/210,317 = 210,317/x
  3. Step 3: Cross multiply
    140,117x = 210,317 × 210,317
  4. Step 4: Simplify right side
    140,117x = 44,233,240,489
  5. Step 5: Solve for x
    x = 44,233,240,489/140,117
  6. Step 6: Final answer
    x = 315,687.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.