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Finding the Third Proportional to 186,787 and 290,022

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Solution

The third proportional to 186,787 and 290,022 is: 450,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,787 : 290,022 = 290,022 : x
  2. Step 2: Convert to fraction form
    186,787/290,022 = 290,022/x
  3. Step 3: Cross multiply
    186,787x = 290,022 × 290,022
  4. Step 4: Simplify right side
    186,787x = 84,112,760,484
  5. Step 5: Solve for x
    x = 84,112,760,484/186,787
  6. Step 6: Final answer
    x = 450,313.78

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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.