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Finding the Third Proportional to 211,758 and 440,940

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Solution

The third proportional to 211,758 and 440,940 is: 918,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,758 : 440,940 = 440,940 : x
  2. Step 2: Convert to fraction form
    211,758/440,940 = 440,940/x
  3. Step 3: Cross multiply
    211,758x = 440,940 × 440,940
  4. Step 4: Simplify right side
    211,758x = 194,428,083,600
  5. Step 5: Solve for x
    x = 194,428,083,600/211,758
  6. Step 6: Final answer
    x = 918,161.69

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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.