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Finding the Third Proportional to 135,452 and 209,618

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Solution

The third proportional to 135,452 and 209,618 is: 324,393.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,452 : 209,618 = 209,618 : x
  2. Step 2: Convert to fraction form
    135,452/209,618 = 209,618/x
  3. Step 3: Cross multiply
    135,452x = 209,618 × 209,618
  4. Step 4: Simplify right side
    135,452x = 43,939,705,924
  5. Step 5: Solve for x
    x = 43,939,705,924/135,452
  6. Step 6: Final answer
    x = 324,393.19

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.