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Finding the Fourth Proportional to 203,342.85, 280,613.16 and 112,704.66

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Solution

The fourth proportional to 203,342.85, 280,613.16 and 112,704.66 is: 155,532.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,342.85 : 280,613.16 = 112,704.66 : x
  2. Step 2: Convert to fraction form
    203,342.85/280,613.16 = 112,704.66/x
  3. Step 3: Cross multiply
    203,342.85x = 280,613.16 × 112,704.66
  4. Step 4: Simplify right side
    203,342.85x = 31,626,410,789.33
  5. Step 5: Solve for x
    x = 31,626,410,789.33/203,342.85
  6. Step 6: Final answer
    x = 155,532.45

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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.