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Finding the Third Proportional to 109,788 and 236,220

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Solution

The third proportional to 109,788 and 236,220 is: 508,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,788 : 236,220 = 236,220 : x
  2. Step 2: Convert to fraction form
    109,788/236,220 = 236,220/x
  3. Step 3: Cross multiply
    109,788x = 236,220 × 236,220
  4. Step 4: Simplify right side
    109,788x = 55,799,888,400
  5. Step 5: Solve for x
    x = 55,799,888,400/109,788
  6. Step 6: Final answer
    x = 508,251.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.