Home / 311,629.20-467,443.80-101,288.40

Finding the Fourth Proportional to 311,629.20, 467,443.80 and 101,288.40

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Solution

The fourth proportional to 311,629.20, 467,443.80 and 101,288.40 is: 151,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,629.20 : 467,443.80 = 101,288.40 : x
  2. Step 2: Convert to fraction form
    311,629.20/467,443.80 = 101,288.40/x
  3. Step 3: Cross multiply
    311,629.20x = 467,443.80 × 101,288.40
  4. Step 4: Simplify right side
    311,629.20x = 47,346,634,591.92
  5. Step 5: Solve for x
    x = 47,346,634,591.92/311,629.20
  6. Step 6: Final answer
    x = 151,932.60

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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.