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Finding the Third Proportional to 138,402 and 302,652.75

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Solution

The third proportional to 138,402 and 302,652.75 is: 661,830.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,402 : 302,652.75 = 302,652.75 : x
  2. Step 2: Convert to fraction form
    138,402/302,652.75 = 302,652.75/x
  3. Step 3: Cross multiply
    138,402x = 302,652.75 × 302,652.75
  4. Step 4: Simplify right side
    138,402x = 91,598,687,082.56
  5. Step 5: Solve for x
    x = 91,598,687,082.56/138,402
  6. Step 6: Final answer
    x = 661,830.66

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.