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Finding the Third Proportional to 138,168 and 298,392

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Solution

The third proportional to 138,168 and 298,392 is: 644,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,168 : 298,392 = 298,392 : x
  2. Step 2: Convert to fraction form
    138,168/298,392 = 298,392/x
  3. Step 3: Cross multiply
    138,168x = 298,392 × 298,392
  4. Step 4: Simplify right side
    138,168x = 89,037,785,664
  5. Step 5: Solve for x
    x = 89,037,785,664/138,168
  6. Step 6: Final answer
    x = 644,416.84

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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.