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Finding the Fourth Proportional to 400,080.21, 599,995.48 and 133,778.56

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Solution

The fourth proportional to 400,080.21, 599,995.48 and 133,778.56 is: 200,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,080.21 : 599,995.48 = 133,778.56 : x
  2. Step 2: Convert to fraction form
    400,080.21/599,995.48 = 133,778.56/x
  3. Step 3: Cross multiply
    400,080.21x = 599,995.48 × 133,778.56
  4. Step 4: Simplify right side
    400,080.21x = 80,266,532,173.54
  5. Step 5: Solve for x
    x = 80,266,532,173.54/400,080.21
  6. Step 6: Final answer
    x = 200,626.10

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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.