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Finding the Third Proportional to 157,930 and 248,169

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Solution

The third proportional to 157,930 and 248,169 is: 389,969.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,930 : 248,169 = 248,169 : x
  2. Step 2: Convert to fraction form
    157,930/248,169 = 248,169/x
  3. Step 3: Cross multiply
    157,930x = 248,169 × 248,169
  4. Step 4: Simplify right side
    157,930x = 61,587,852,561
  5. Step 5: Solve for x
    x = 61,587,852,561/157,930
  6. Step 6: Final answer
    x = 389,969.31

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.