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Finding the Third Proportional to 131,616 and 289,464

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Solution

The third proportional to 131,616 and 289,464 is: 636,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,616 : 289,464 = 289,464 : x
  2. Step 2: Convert to fraction form
    131,616/289,464 = 289,464/x
  3. Step 3: Cross multiply
    131,616x = 289,464 × 289,464
  4. Step 4: Simplify right side
    131,616x = 83,789,407,296
  5. Step 5: Solve for x
    x = 83,789,407,296/131,616
  6. Step 6: Final answer
    x = 636,620.22

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.