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Finding the Third Proportional to 100,623.13 and 209,513.50

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Solution

The third proportional to 100,623.13 and 209,513.50 is: 436,240.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,623.13 : 209,513.50 = 209,513.50 : x
  2. Step 2: Convert to fraction form
    100,623.13/209,513.50 = 209,513.50/x
  3. Step 3: Cross multiply
    100,623.13x = 209,513.50 × 209,513.50
  4. Step 4: Simplify right side
    100,623.13x = 43,895,906,682.25
  5. Step 5: Solve for x
    x = 43,895,906,682.25/100,623.13
  6. Step 6: Final answer
    x = 436,240.74

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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.