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Finding the Fourth Proportional to 354,585.52, 489,328 and 203,682.48

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Solution

The fourth proportional to 354,585.52, 489,328 and 203,682.48 is: 281,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,585.52 : 489,328 = 203,682.48 : x
  2. Step 2: Convert to fraction form
    354,585.52/489,328 = 203,682.48/x
  3. Step 3: Cross multiply
    354,585.52x = 489,328 × 203,682.48
  4. Step 4: Simplify right side
    354,585.52x = 99,667,540,573.44
  5. Step 5: Solve for x
    x = 99,667,540,573.44/354,585.52
  6. Step 6: Final answer
    x = 281,081.81

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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.