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Finding the Third Proportional to 125,388 and 261,138

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Solution

The third proportional to 125,388 and 261,138 is: 543,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,388 : 261,138 = 261,138 : x
  2. Step 2: Convert to fraction form
    125,388/261,138 = 261,138/x
  3. Step 3: Cross multiply
    125,388x = 261,138 × 261,138
  4. Step 4: Simplify right side
    125,388x = 68,193,055,044
  5. Step 5: Solve for x
    x = 68,193,055,044/125,388
  6. Step 6: Final answer
    x = 543,856.31

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.