Home / 388,191.21-582,405.66-198,785.68

Finding the Fourth Proportional to 388,191.21, 582,405.66 and 198,785.68

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Solution

The fourth proportional to 388,191.21, 582,405.66 and 198,785.68 is: 298,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,191.21 : 582,405.66 = 198,785.68 : x
  2. Step 2: Convert to fraction form
    388,191.21/582,405.66 = 198,785.68/x
  3. Step 3: Cross multiply
    388,191.21x = 582,405.66 × 198,785.68
  4. Step 4: Simplify right side
    388,191.21x = 115,773,905,321.33
  5. Step 5: Solve for x
    x = 115,773,905,321.33/388,191.21
  6. Step 6: Final answer
    x = 298,239.38

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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.