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Finding the Fourth Proportional to 311,724.80, 467,630.40 and 111,996.80

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Solution

The fourth proportional to 311,724.80, 467,630.40 and 111,996.80 is: 168,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,724.80 : 467,630.40 = 111,996.80 : x
  2. Step 2: Convert to fraction form
    311,724.80/467,630.40 = 111,996.80/x
  3. Step 3: Cross multiply
    311,724.80x = 467,630.40 × 111,996.80
  4. Step 4: Simplify right side
    311,724.80x = 52,373,108,382.72
  5. Step 5: Solve for x
    x = 52,373,108,382.72/311,724.80
  6. Step 6: Final answer
    x = 168,010.72

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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.