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Finding the Fourth Proportional to 203,558.52, 280,919.76 and 112,908.48

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Solution

The fourth proportional to 203,558.52, 280,919.76 and 112,908.48 is: 155,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,558.52 : 280,919.76 = 112,908.48 : x
  2. Step 2: Convert to fraction form
    203,558.52/280,919.76 = 112,908.48/x
  3. Step 3: Cross multiply
    203,558.52x = 280,919.76 × 112,908.48
  4. Step 4: Simplify right side
    203,558.52x = 31,718,223,103.56
  5. Step 5: Solve for x
    x = 31,718,223,103.56/203,558.52
  6. Step 6: Final answer
    x = 155,818.70

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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.