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Finding the Fourth Proportional to 203,371.04, 280,648.64 and 111,489.71

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Solution

The fourth proportional to 203,371.04, 280,648.64 and 111,489.71 is: 153,853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,371.04 : 280,648.64 = 111,489.71 : x
  2. Step 2: Convert to fraction form
    203,371.04/280,648.64 = 111,489.71/x
  3. Step 3: Cross multiply
    203,371.04x = 280,648.64 × 111,489.71
  4. Step 4: Simplify right side
    203,371.04x = 31,289,433,524.80
  5. Step 5: Solve for x
    x = 31,289,433,524.80/203,371.04
  6. Step 6: Final answer
    x = 153,853.93

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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.