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Finding the Fourth Proportional to 399,974.68, 599,993.88 and 133,736.86

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Solution

The fourth proportional to 399,974.68, 599,993.88 and 133,736.86 is: 200,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,974.68 : 599,993.88 = 133,736.86 : x
  2. Step 2: Convert to fraction form
    399,974.68/599,993.88 = 133,736.86/x
  3. Step 3: Cross multiply
    399,974.68x = 599,993.88 × 133,736.86
  4. Step 4: Simplify right side
    399,974.68x = 80,241,297,530.42
  5. Step 5: Solve for x
    x = 80,241,297,530.42/399,974.68
  6. Step 6: Final answer
    x = 200,615.94

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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.