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Finding the Third Proportional to 120,836 and 259,168

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Solution

The third proportional to 120,836 and 259,168 is: 555,861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836 : 259,168 = 259,168 : x
  2. Step 2: Convert to fraction form
    120,836/259,168 = 259,168/x
  3. Step 3: Cross multiply
    120,836x = 259,168 × 259,168
  4. Step 4: Simplify right side
    120,836x = 67,168,052,224
  5. Step 5: Solve for x
    x = 67,168,052,224/120,836
  6. Step 6: Final answer
    x = 555,861.27

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.