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Finding the Third Proportional to 213,276 and 324,519

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Solution

The third proportional to 213,276 and 324,519 is: 493,785.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,276 : 324,519 = 324,519 : x
  2. Step 2: Convert to fraction form
    213,276/324,519 = 324,519/x
  3. Step 3: Cross multiply
    213,276x = 324,519 × 324,519
  4. Step 4: Simplify right side
    213,276x = 105,312,581,361
  5. Step 5: Solve for x
    x = 105,312,581,361/213,276
  6. Step 6: Final answer
    x = 493,785.43

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.