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Finding the Fourth Proportional to 203,876.40, 305,814.60 and 185,505.60

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Solution

The fourth proportional to 203,876.40, 305,814.60 and 185,505.60 is: 278,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,876.40 : 305,814.60 = 185,505.60 : x
  2. Step 2: Convert to fraction form
    203,876.40/305,814.60 = 185,505.60/x
  3. Step 3: Cross multiply
    203,876.40x = 305,814.60 × 185,505.60
  4. Step 4: Simplify right side
    203,876.40x = 56,730,320,861.76
  5. Step 5: Solve for x
    x = 56,730,320,861.76/203,876.40
  6. Step 6: Final answer
    x = 278,258.40

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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.