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Finding the Fourth Proportional to 203,903.35, 305,855.03 and 133,044.55

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Solution

The fourth proportional to 203,903.35, 305,855.03 and 133,044.55 is: 199,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,903.35 : 305,855.03 = 133,044.55 : x
  2. Step 2: Convert to fraction form
    203,903.35/305,855.03 = 133,044.55/x
  3. Step 3: Cross multiply
    203,903.35x = 305,855.03 × 133,044.55
  4. Step 4: Simplify right side
    203,903.35x = 40,692,344,831.59
  5. Step 5: Solve for x
    x = 40,692,344,831.59/203,903.35
  6. Step 6: Final answer
    x = 199,566.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.