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Finding the Third Proportional to 64,270 and 138,408.25

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Solution

The third proportional to 64,270 and 138,408.25 is: 298,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,270 : 138,408.25 = 138,408.25 : x
  2. Step 2: Convert to fraction form
    64,270/138,408.25 = 138,408.25/x
  3. Step 3: Cross multiply
    64,270x = 138,408.25 × 138,408.25
  4. Step 4: Simplify right side
    64,270x = 19,156,843,668.06
  5. Step 5: Solve for x
    x = 19,156,843,668.06/64,270
  6. Step 6: Final answer
    x = 298,068.21

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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.