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Finding the Third Proportional to 217,378 and 458,336

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Solution

The third proportional to 217,378 and 458,336 is: 966,389.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,378 : 458,336 = 458,336 : x
  2. Step 2: Convert to fraction form
    217,378/458,336 = 458,336/x
  3. Step 3: Cross multiply
    217,378x = 458,336 × 458,336
  4. Step 4: Simplify right side
    217,378x = 210,071,888,896
  5. Step 5: Solve for x
    x = 210,071,888,896/217,378
  6. Step 6: Final answer
    x = 966,389.83

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.