Home / 398,942.40-597,914.64-199,318.68

Finding the Fourth Proportional to 398,942.40, 597,914.64 and 199,318.68

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Solution

The fourth proportional to 398,942.40, 597,914.64 and 199,318.68 is: 298,728.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,942.40 : 597,914.64 = 199,318.68 : x
  2. Step 2: Convert to fraction form
    398,942.40/597,914.64 = 199,318.68/x
  3. Step 3: Cross multiply
    398,942.40x = 597,914.64 × 199,318.68
  4. Step 4: Simplify right side
    398,942.40x = 119,175,556,797.48
  5. Step 5: Solve for x
    x = 119,175,556,797.48/398,942.40
  6. Step 6: Final answer
    x = 298,728.73

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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.