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Finding the Third Proportional to 120,888 and 261,240

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Solution

The third proportional to 120,888 and 261,240 is: 564,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,888 : 261,240 = 261,240 : x
  2. Step 2: Convert to fraction form
    120,888/261,240 = 261,240/x
  3. Step 3: Cross multiply
    120,888x = 261,240 × 261,240
  4. Step 4: Simplify right side
    120,888x = 68,246,337,600
  5. Step 5: Solve for x
    x = 68,246,337,600/120,888
  6. Step 6: Final answer
    x = 564,541.87

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.