Home / 398,454.21-597,867.75-198,790.02

Finding the Fourth Proportional to 398,454.21, 597,867.75 and 198,790.02

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Solution

The fourth proportional to 398,454.21, 597,867.75 and 198,790.02 is: 298,278.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,454.21 : 597,867.75 = 198,790.02 : x
  2. Step 2: Convert to fraction form
    398,454.21/597,867.75 = 198,790.02/x
  3. Step 3: Cross multiply
    398,454.21x = 597,867.75 × 198,790.02
  4. Step 4: Simplify right side
    398,454.21x = 118,850,141,979.86
  5. Step 5: Solve for x
    x = 118,850,141,979.86/398,454.21
  6. Step 6: Final answer
    x = 298,278.04

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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.