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Finding the Third Proportional to 121,329 and 262,386

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Solution

The third proportional to 121,329 and 262,386 is: 567,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,329 : 262,386 = 262,386 : x
  2. Step 2: Convert to fraction form
    121,329/262,386 = 262,386/x
  3. Step 3: Cross multiply
    121,329x = 262,386 × 262,386
  4. Step 4: Simplify right side
    121,329x = 68,846,412,996
  5. Step 5: Solve for x
    x = 68,846,412,996/121,329
  6. Step 6: Final answer
    x = 567,435.76

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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.