Home / 398,419.56-597,979.94-209,015.27

Finding the Fourth Proportional to 398,419.56, 597,979.94 and 209,015.27

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Solution

The fourth proportional to 398,419.56, 597,979.94 and 209,015.27 is: 313,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,419.56 : 597,979.94 = 209,015.27 : x
  2. Step 2: Convert to fraction form
    398,419.56/597,979.94 = 209,015.27/x
  3. Step 3: Cross multiply
    398,419.56x = 597,979.94 × 209,015.27
  4. Step 4: Simplify right side
    398,419.56x = 124,986,936,821.13
  5. Step 5: Solve for x
    x = 124,986,936,821.13/398,419.56
  6. Step 6: Final answer
    x = 313,706.83

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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.