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Finding the Third Proportional to 217,474 and 317,819

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Solution

The third proportional to 217,474 and 317,819 is: 464,464.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,474 : 317,819 = 317,819 : x
  2. Step 2: Convert to fraction form
    217,474/317,819 = 317,819/x
  3. Step 3: Cross multiply
    217,474x = 317,819 × 317,819
  4. Step 4: Simplify right side
    217,474x = 101,008,916,761
  5. Step 5: Solve for x
    x = 101,008,916,761/217,474
  6. Step 6: Final answer
    x = 464,464.33

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.