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Finding the Fourth Proportional to 203,944.10, 305,916.15 and 85,846.10

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Solution

The fourth proportional to 203,944.10, 305,916.15 and 85,846.10 is: 128,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,944.10 : 305,916.15 = 85,846.10 : x
  2. Step 2: Convert to fraction form
    203,944.10/305,916.15 = 85,846.10/x
  3. Step 3: Cross multiply
    203,944.10x = 305,916.15 × 85,846.10
  4. Step 4: Simplify right side
    203,944.10x = 26,261,708,404.52
  5. Step 5: Solve for x
    x = 26,261,708,404.52/203,944.10
  6. Step 6: Final answer
    x = 128,769.15

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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.