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Finding the Third Proportional to 99,471 and 211,213.50

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Solution

The third proportional to 99,471 and 211,213.50 is: 448,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,471 : 211,213.50 = 211,213.50 : x
  2. Step 2: Convert to fraction form
    99,471/211,213.50 = 211,213.50/x
  3. Step 3: Cross multiply
    99,471x = 211,213.50 × 211,213.50
  4. Step 4: Simplify right side
    99,471x = 44,611,142,582.25
  5. Step 5: Solve for x
    x = 44,611,142,582.25/99,471
  6. Step 6: Final answer
    x = 448,483.91

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.