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Finding the Fourth Proportional to 311,580.28, 467,195.34 and 129,155.32

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Solution

The fourth proportional to 311,580.28, 467,195.34 and 129,155.32 is: 193,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,580.28 : 467,195.34 = 129,155.32 : x
  2. Step 2: Convert to fraction form
    311,580.28/467,195.34 = 129,155.32/x
  3. Step 3: Cross multiply
    311,580.28x = 467,195.34 × 129,155.32
  4. Step 4: Simplify right side
    311,580.28x = 60,340,763,640.21
  5. Step 5: Solve for x
    x = 60,340,763,640.21/311,580.28
  6. Step 6: Final answer
    x = 193,660.41

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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.