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Finding the Third Proportional to 140,071 and 210,247

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Solution

The third proportional to 140,071 and 210,247 is: 315,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,071 : 210,247 = 210,247 : x
  2. Step 2: Convert to fraction form
    140,071/210,247 = 210,247/x
  3. Step 3: Cross multiply
    140,071x = 210,247 × 210,247
  4. Step 4: Simplify right side
    140,071x = 44,203,801,009
  5. Step 5: Solve for x
    x = 44,203,801,009/140,071
  6. Step 6: Final answer
    x = 315,581.39

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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.