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Finding the Third Proportional to 120,875 and 261,838

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Solution

The third proportional to 120,875 and 261,838 is: 567,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,875 : 261,838 = 261,838 : x
  2. Step 2: Convert to fraction form
    120,875/261,838 = 261,838/x
  3. Step 3: Cross multiply
    120,875x = 261,838 × 261,838
  4. Step 4: Simplify right side
    120,875x = 68,559,138,244
  5. Step 5: Solve for x
    x = 68,559,138,244/120,875
  6. Step 6: Final answer
    x = 567,190.39

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.