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Finding the Fourth Proportional to 311,321.20, 466,981.80 and 153,857.20

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Solution

The fourth proportional to 311,321.20, 466,981.80 and 153,857.20 is: 230,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,321.20 : 466,981.80 = 153,857.20 : x
  2. Step 2: Convert to fraction form
    311,321.20/466,981.80 = 153,857.20/x
  3. Step 3: Cross multiply
    311,321.20x = 466,981.80 × 153,857.20
  4. Step 4: Simplify right side
    311,321.20x = 71,848,512,198.96
  5. Step 5: Solve for x
    x = 71,848,512,198.96/311,321.20
  6. Step 6: Final answer
    x = 230,785.80

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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.