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Finding the Third Proportional to 143,339 and 317,228

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Solution

The third proportional to 143,339 and 317,228 is: 702,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,339 : 317,228 = 317,228 : x
  2. Step 2: Convert to fraction form
    143,339/317,228 = 317,228/x
  3. Step 3: Cross multiply
    143,339x = 317,228 × 317,228
  4. Step 4: Simplify right side
    143,339x = 100,633,603,984
  5. Step 5: Solve for x
    x = 100,633,603,984/143,339
  6. Step 6: Final answer
    x = 702,067.16

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.