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Finding the Fourth Proportional to 203,427.30, 305,250.30 and 85,110.60

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Solution

The fourth proportional to 203,427.30, 305,250.30 and 85,110.60 is: 127,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,427.30 : 305,250.30 = 85,110.60 : x
  2. Step 2: Convert to fraction form
    203,427.30/305,250.30 = 85,110.60/x
  3. Step 3: Cross multiply
    203,427.30x = 305,250.30 × 85,110.60
  4. Step 4: Simplify right side
    203,427.30x = 25,980,036,183.18
  5. Step 5: Solve for x
    x = 25,980,036,183.18/203,427.30
  6. Step 6: Final answer
    x = 127,711.65

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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.