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Finding the Fourth Proportional to 243,394.61, 335,891.41 and 135,976.46

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Solution

The fourth proportional to 243,394.61, 335,891.41 and 135,976.46 is: 187,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,394.61 : 335,891.41 = 135,976.46 : x
  2. Step 2: Convert to fraction form
    243,394.61/335,891.41 = 135,976.46/x
  3. Step 3: Cross multiply
    243,394.61x = 335,891.41 × 135,976.46
  4. Step 4: Simplify right side
    243,394.61x = 45,673,322,856.81
  5. Step 5: Solve for x
    x = 45,673,322,856.81/243,394.61
  6. Step 6: Final answer
    x = 187,651.34

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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.