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Finding the Fourth Proportional to 203,596.80, 280,965.28 and 112,958.71

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Solution

The fourth proportional to 203,596.80, 280,965.28 and 112,958.71 is: 155,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,596.80 : 280,965.28 = 112,958.71 : x
  2. Step 2: Convert to fraction form
    203,596.80/280,965.28 = 112,958.71/x
  3. Step 3: Cross multiply
    203,596.80x = 280,965.28 × 112,958.71
  4. Step 4: Simplify right side
    203,596.80x = 31,737,475,583.59
  5. Step 5: Solve for x
    x = 31,737,475,583.59/203,596.80
  6. Step 6: Final answer
    x = 155,883.96

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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.