Home / 307,261.44-423,780.42-199,865.78

Finding the Fourth Proportional to 307,261.44, 423,780.42 and 199,865.78

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Solution

The fourth proportional to 307,261.44, 423,780.42 and 199,865.78 is: 275,658.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,261.44 : 423,780.42 = 199,865.78 : x
  2. Step 2: Convert to fraction form
    307,261.44/423,780.42 = 199,865.78/x
  3. Step 3: Cross multiply
    307,261.44x = 423,780.42 × 199,865.78
  4. Step 4: Simplify right side
    307,261.44x = 84,699,204,192.03
  5. Step 5: Solve for x
    x = 84,699,204,192.03/307,261.44
  6. Step 6: Final answer
    x = 275,658.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.