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Finding the Fourth Proportional to 203,604.39, 280,964.58 and 112,959.39

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Solution

The fourth proportional to 203,604.39, 280,964.58 and 112,959.39 is: 155,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,604.39 : 280,964.58 = 112,959.39 : x
  2. Step 2: Convert to fraction form
    203,604.39/280,964.58 = 112,959.39/x
  3. Step 3: Cross multiply
    203,604.39x = 280,964.58 × 112,959.39
  4. Step 4: Simplify right side
    203,604.39x = 31,737,587,568.41
  5. Step 5: Solve for x
    x = 31,737,587,568.41/203,604.39
  6. Step 6: Final answer
    x = 155,878.70

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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.