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Finding the Fourth Proportional to 203,480.34, 280,789.14 and 112,832.97

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Solution

The fourth proportional to 203,480.34, 280,789.14 and 112,832.97 is: 155,701.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,480.34 : 280,789.14 = 112,832.97 : x
  2. Step 2: Convert to fraction form
    203,480.34/280,789.14 = 112,832.97/x
  3. Step 3: Cross multiply
    203,480.34x = 280,789.14 × 112,832.97
  4. Step 4: Simplify right side
    203,480.34x = 31,682,272,609.95
  5. Step 5: Solve for x
    x = 31,682,272,609.95/203,480.34
  6. Step 6: Final answer
    x = 155,701.89

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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.