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Finding the Third Proportional to 121,699 and 266,338

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Solution

The third proportional to 121,699 and 266,338 is: 582,880.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,699 : 266,338 = 266,338 : x
  2. Step 2: Convert to fraction form
    121,699/266,338 = 266,338/x
  3. Step 3: Cross multiply
    121,699x = 266,338 × 266,338
  4. Step 4: Simplify right side
    121,699x = 70,935,930,244
  5. Step 5: Solve for x
    x = 70,935,930,244/121,699
  6. Step 6: Final answer
    x = 582,880.14

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.