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Finding the Third Proportional to 201,788 and 442,938

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Solution

The third proportional to 201,788 and 442,938 is: 972,278.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,788 : 442,938 = 442,938 : x
  2. Step 2: Convert to fraction form
    201,788/442,938 = 442,938/x
  3. Step 3: Cross multiply
    201,788x = 442,938 × 442,938
  4. Step 4: Simplify right side
    201,788x = 196,194,071,844
  5. Step 5: Solve for x
    x = 196,194,071,844/201,788
  6. Step 6: Final answer
    x = 972,278.19

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.