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Finding the Third Proportional to 132,960 and 289,728

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Solution

The third proportional to 132,960 and 289,728 is: 631,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,960 : 289,728 = 289,728 : x
  2. Step 2: Convert to fraction form
    132,960/289,728 = 289,728/x
  3. Step 3: Cross multiply
    132,960x = 289,728 × 289,728
  4. Step 4: Simplify right side
    132,960x = 83,942,313,984
  5. Step 5: Solve for x
    x = 83,942,313,984/132,960
  6. Step 6: Final answer
    x = 631,335.09

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.