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Finding the Third Proportional to 133,986 and 278,998

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Solution

The third proportional to 133,986 and 278,998 is: 580,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,986 : 278,998 = 278,998 : x
  2. Step 2: Convert to fraction form
    133,986/278,998 = 278,998/x
  3. Step 3: Cross multiply
    133,986x = 278,998 × 278,998
  4. Step 4: Simplify right side
    133,986x = 77,839,884,004
  5. Step 5: Solve for x
    x = 77,839,884,004/133,986
  6. Step 6: Final answer
    x = 580,955.35

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.