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Finding the Third Proportional to 119,218 and 258,940

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Solution

The third proportional to 119,218 and 258,940 is: 562,414.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,218 : 258,940 = 258,940 : x
  2. Step 2: Convert to fraction form
    119,218/258,940 = 258,940/x
  3. Step 3: Cross multiply
    119,218x = 258,940 × 258,940
  4. Step 4: Simplify right side
    119,218x = 67,049,923,600
  5. Step 5: Solve for x
    x = 67,049,923,600/119,218
  6. Step 6: Final answer
    x = 562,414.43

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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.