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Finding the Third Proportional to 100,582.88 and 209,431.13

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Solution

The third proportional to 100,582.88 and 209,431.13 is: 436,072.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,582.88 : 209,431.13 = 209,431.13 : x
  2. Step 2: Convert to fraction form
    100,582.88/209,431.13 = 209,431.13/x
  3. Step 3: Cross multiply
    100,582.88x = 209,431.13 × 209,431.13
  4. Step 4: Simplify right side
    100,582.88x = 43,861,396,118.77
  5. Step 5: Solve for x
    x = 43,861,396,118.77/100,582.88
  6. Step 6: Final answer
    x = 436,072.21

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.