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Finding the Fourth Proportional to 203,568.30, 280,925.94 and 112,930.20

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Solution

The fourth proportional to 203,568.30, 280,925.94 and 112,930.20 is: 155,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,568.30 : 280,925.94 = 112,930.20 : x
  2. Step 2: Convert to fraction form
    203,568.30/280,925.94 = 112,930.20/x
  3. Step 3: Cross multiply
    203,568.30x = 280,925.94 × 112,930.20
  4. Step 4: Simplify right side
    203,568.30x = 31,725,022,589.39
  5. Step 5: Solve for x
    x = 31,725,022,589.39/203,568.30
  6. Step 6: Final answer
    x = 155,844.61

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1.5x scale

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.