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Finding the Third Proportional to 99,664 and 212,248

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Solution

The third proportional to 99,664 and 212,248 is: 452,010.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,664 : 212,248 = 212,248 : x
  2. Step 2: Convert to fraction form
    99,664/212,248 = 212,248/x
  3. Step 3: Cross multiply
    99,664x = 212,248 × 212,248
  4. Step 4: Simplify right side
    99,664x = 45,049,213,504
  5. Step 5: Solve for x
    x = 45,049,213,504/99,664
  6. Step 6: Final answer
    x = 452,010.89

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.