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Finding the Fourth Proportional to 423,804.02, 635,441.76 and 199,067.90

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Solution

The fourth proportional to 423,804.02, 635,441.76 and 199,067.90 is: 298,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,804.02 : 635,441.76 = 199,067.90 : x
  2. Step 2: Convert to fraction form
    423,804.02/635,441.76 = 199,067.90/x
  3. Step 3: Cross multiply
    423,804.02x = 635,441.76 × 199,067.90
  4. Step 4: Simplify right side
    423,804.02x = 126,496,053,558.30
  5. Step 5: Solve for x
    x = 126,496,053,558.30/423,804.02
  6. Step 6: Final answer
    x = 298,477.71

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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.