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Finding the Fourth Proportional to 243,992.97, 336,710.25 and 136,563

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Solution

The fourth proportional to 243,992.97, 336,710.25 and 136,563 is: 188,456.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,992.97 : 336,710.25 = 136,563 : x
  2. Step 2: Convert to fraction form
    243,992.97/336,710.25 = 136,563/x
  3. Step 3: Cross multiply
    243,992.97x = 336,710.25 × 136,563
  4. Step 4: Simplify right side
    243,992.97x = 45,982,161,870.75
  5. Step 5: Solve for x
    x = 45,982,161,870.75/243,992.97
  6. Step 6: Final answer
    x = 188,456.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.