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Finding the Third Proportional to 102,372 and 221,511

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Solution

The third proportional to 102,372 and 221,511 is: 479,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,372 : 221,511 = 221,511 : x
  2. Step 2: Convert to fraction form
    102,372/221,511 = 221,511/x
  3. Step 3: Cross multiply
    102,372x = 221,511 × 221,511
  4. Step 4: Simplify right side
    102,372x = 49,067,123,121
  5. Step 5: Solve for x
    x = 49,067,123,121/102,372
  6. Step 6: Final answer
    x = 479,302.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.