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Finding the Third Proportional to 172,932 and 378,669

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Solution

The third proportional to 172,932 and 378,669 is: 829,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,932 : 378,669 = 378,669 : x
  2. Step 2: Convert to fraction form
    172,932/378,669 = 378,669/x
  3. Step 3: Cross multiply
    172,932x = 378,669 × 378,669
  4. Step 4: Simplify right side
    172,932x = 143,390,211,561
  5. Step 5: Solve for x
    x = 143,390,211,561/172,932
  6. Step 6: Final answer
    x = 829,171.07

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.