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Finding the Fourth Proportional to 203,481.45, 280,818.78 and 112,846.10

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Solution

The fourth proportional to 203,481.45, 280,818.78 and 112,846.10 is: 155,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,481.45 : 280,818.78 = 112,846.10 : x
  2. Step 2: Convert to fraction form
    203,481.45/280,818.78 = 112,846.10/x
  3. Step 3: Cross multiply
    203,481.45x = 280,818.78 × 112,846.10
  4. Step 4: Simplify right side
    203,481.45x = 31,689,304,129.76
  5. Step 5: Solve for x
    x = 31,689,304,129.76/203,481.45
  6. Step 6: Final answer
    x = 155,735.59

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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.