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Finding the Third Proportional to 151,778 and 218,613

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Solution

The third proportional to 151,778 and 218,613 is: 314,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,778 : 218,613 = 218,613 : x
  2. Step 2: Convert to fraction form
    151,778/218,613 = 218,613/x
  3. Step 3: Cross multiply
    151,778x = 218,613 × 218,613
  4. Step 4: Simplify right side
    151,778x = 47,791,643,769
  5. Step 5: Solve for x
    x = 47,791,643,769/151,778
  6. Step 6: Final answer
    x = 314,878.60

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.