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Finding the Third Proportional to 215,747 and 470,422

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Solution

The third proportional to 215,747 and 470,422 is: 1,025,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,747 : 470,422 = 470,422 : x
  2. Step 2: Convert to fraction form
    215,747/470,422 = 470,422/x
  3. Step 3: Cross multiply
    215,747x = 470,422 × 470,422
  4. Step 4: Simplify right side
    215,747x = 221,296,858,084
  5. Step 5: Solve for x
    x = 221,296,858,084/215,747
  6. Step 6: Final answer
    x = 1,025,723.92

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.