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Finding the Fourth Proportional to 243,396.72, 335,863.32 and 135,964.44

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Solution

The fourth proportional to 243,396.72, 335,863.32 and 135,964.44 is: 187,617.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,396.72 : 335,863.32 = 135,964.44 : x
  2. Step 2: Convert to fraction form
    243,396.72/335,863.32 = 135,964.44/x
  3. Step 3: Cross multiply
    243,396.72x = 335,863.32 × 135,964.44
  4. Step 4: Simplify right side
    243,396.72x = 45,665,468,220.34
  5. Step 5: Solve for x
    x = 45,665,468,220.34/243,396.72
  6. Step 6: Final answer
    x = 187,617.43

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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.