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Finding the Fourth Proportional to 203,311.67, 280,576.25 and 112,659.15

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Solution

The fourth proportional to 203,311.67, 280,576.25 and 112,659.15 is: 155,473.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,311.67 : 280,576.25 = 112,659.15 : x
  2. Step 2: Convert to fraction form
    203,311.67/280,576.25 = 112,659.15/x
  3. Step 3: Cross multiply
    203,311.67x = 280,576.25 × 112,659.15
  4. Step 4: Simplify right side
    203,311.67x = 31,609,481,835.19
  5. Step 5: Solve for x
    x = 31,609,481,835.19/203,311.67
  6. Step 6: Final answer
    x = 155,473.03

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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.