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Finding the Fourth Proportional to 243,843.24, 336,490.11 and 136,392.54

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Solution

The fourth proportional to 243,843.24, 336,490.11 and 136,392.54 is: 188,214.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,843.24 : 336,490.11 = 136,392.54 : x
  2. Step 2: Convert to fraction form
    243,843.24/336,490.11 = 136,392.54/x
  3. Step 3: Cross multiply
    243,843.24x = 336,490.11 × 136,392.54
  4. Step 4: Simplify right side
    243,843.24x = 45,894,740,787.78
  5. Step 5: Solve for x
    x = 45,894,740,787.78/243,843.24
  6. Step 6: Final answer
    x = 188,214.12

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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.