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Finding the Third Proportional to 128,904 and 299,012

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Solution

The third proportional to 128,904 and 299,012 is: 693,602.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904 : 299,012 = 299,012 : x
  2. Step 2: Convert to fraction form
    128,904/299,012 = 299,012/x
  3. Step 3: Cross multiply
    128,904x = 299,012 × 299,012
  4. Step 4: Simplify right side
    128,904x = 89,408,176,144
  5. Step 5: Solve for x
    x = 89,408,176,144/128,904
  6. Step 6: Final answer
    x = 693,602.81

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.