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Finding the Third Proportional to 217,618 and 454,918

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Solution

The third proportional to 217,618 and 454,918 is: 950,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,618 : 454,918 = 454,918 : x
  2. Step 2: Convert to fraction form
    217,618/454,918 = 454,918/x
  3. Step 3: Cross multiply
    217,618x = 454,918 × 454,918
  4. Step 4: Simplify right side
    217,618x = 206,950,386,724
  5. Step 5: Solve for x
    x = 206,950,386,724/217,618
  6. Step 6: Final answer
    x = 950,980.10

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.