Home / 398,704.14-597,742.29-198,921.78

Finding the Fourth Proportional to 398,704.14, 597,742.29 and 198,921.78

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Solution

The fourth proportional to 398,704.14, 597,742.29 and 198,921.78 is: 298,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,704.14 : 597,742.29 = 198,921.78 : x
  2. Step 2: Convert to fraction form
    398,704.14/597,742.29 = 198,921.78/x
  3. Step 3: Cross multiply
    398,704.14x = 597,742.29 × 198,921.78
  4. Step 4: Simplify right side
    398,704.14x = 118,903,960,308.08
  5. Step 5: Solve for x
    x = 118,903,960,308.08/398,704.14
  6. Step 6: Final answer
    x = 298,226.05

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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.