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Finding the Fourth Proportional to 203,592.80, 305,241.54 and 136,867.40

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Solution

The fourth proportional to 203,592.80, 305,241.54 and 136,867.40 is: 205,201.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,592.80 : 305,241.54 = 136,867.40 : x
  2. Step 2: Convert to fraction form
    203,592.80/305,241.54 = 136,867.40/x
  3. Step 3: Cross multiply
    203,592.80x = 305,241.54 × 136,867.40
  4. Step 4: Simplify right side
    203,592.80x = 41,777,615,951.80
  5. Step 5: Solve for x
    x = 41,777,615,951.80/203,592.80
  6. Step 6: Final answer
    x = 205,201.83

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1.5x scale

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.