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Finding the Fourth Proportional to 203,922.60, 305,883.90 and 85,824.60

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Solution

The fourth proportional to 203,922.60, 305,883.90 and 85,824.60 is: 128,736.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,922.60 : 305,883.90 = 85,824.60 : x
  2. Step 2: Convert to fraction form
    203,922.60/305,883.90 = 85,824.60/x
  3. Step 3: Cross multiply
    203,922.60x = 305,883.90 × 85,824.60
  4. Step 4: Simplify right side
    203,922.60x = 26,252,363,363.94
  5. Step 5: Solve for x
    x = 26,252,363,363.94/203,922.60
  6. Step 6: Final answer
    x = 128,736.90

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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.