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Finding the Third Proportional to 123,276 and 266,220

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Solution

The third proportional to 123,276 and 266,220 is: 574,913.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,276 : 266,220 = 266,220 : x
  2. Step 2: Convert to fraction form
    123,276/266,220 = 266,220/x
  3. Step 3: Cross multiply
    123,276x = 266,220 × 266,220
  4. Step 4: Simplify right side
    123,276x = 70,873,088,400
  5. Step 5: Solve for x
    x = 70,873,088,400/123,276
  6. Step 6: Final answer
    x = 574,913.92

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.