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Finding the Third Proportional to 128,448 and 276,012

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Solution

The third proportional to 128,448 and 276,012 is: 593,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,448 : 276,012 = 276,012 : x
  2. Step 2: Convert to fraction form
    128,448/276,012 = 276,012/x
  3. Step 3: Cross multiply
    128,448x = 276,012 × 276,012
  4. Step 4: Simplify right side
    128,448x = 76,182,624,144
  5. Step 5: Solve for x
    x = 76,182,624,144/128,448
  6. Step 6: Final answer
    x = 593,100.90

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.