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Finding the Fourth Proportional to 204,904.80, 307,357.20 and 199,072.80

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Solution

The fourth proportional to 204,904.80, 307,357.20 and 199,072.80 is: 298,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,904.80 : 307,357.20 = 199,072.80 : x
  2. Step 2: Convert to fraction form
    204,904.80/307,357.20 = 199,072.80/x
  3. Step 3: Cross multiply
    204,904.80x = 307,357.20 × 199,072.80
  4. Step 4: Simplify right side
    204,904.80x = 61,186,458,404.16
  5. Step 5: Solve for x
    x = 61,186,458,404.16/204,904.80
  6. Step 6: Final answer
    x = 298,609.20

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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.