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Finding the Third Proportional to 191,991 and 270,247

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Solution

The third proportional to 191,991 and 270,247 is: 380,400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,991 : 270,247 = 270,247 : x
  2. Step 2: Convert to fraction form
    191,991/270,247 = 270,247/x
  3. Step 3: Cross multiply
    191,991x = 270,247 × 270,247
  4. Step 4: Simplify right side
    191,991x = 73,033,441,009
  5. Step 5: Solve for x
    x = 73,033,441,009/191,991
  6. Step 6: Final answer
    x = 380,400.34

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.