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Finding the Third Proportional to 216,762 and 287,694

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Solution

The third proportional to 216,762 and 287,694 is: 381,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,762 : 287,694 = 287,694 : x
  2. Step 2: Convert to fraction form
    216,762/287,694 = 287,694/x
  3. Step 3: Cross multiply
    216,762x = 287,694 × 287,694
  4. Step 4: Simplify right side
    216,762x = 82,767,837,636
  5. Step 5: Solve for x
    x = 82,767,837,636/216,762
  6. Step 6: Final answer
    x = 381,837.40

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.