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Finding the Third Proportional to 128,954 and 197,247

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Solution

The third proportional to 128,954 and 197,247 is: 301,707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,954 : 197,247 = 197,247 : x
  2. Step 2: Convert to fraction form
    128,954/197,247 = 197,247/x
  3. Step 3: Cross multiply
    128,954x = 197,247 × 197,247
  4. Step 4: Simplify right side
    128,954x = 38,906,379,009
  5. Step 5: Solve for x
    x = 38,906,379,009/128,954
  6. Step 6: Final answer
    x = 301,707.42

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.