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Finding the Fourth Proportional to 324,781.80, 447,791 and 248,394.60

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Solution

The fourth proportional to 324,781.80, 447,791 and 248,394.60 is: 342,472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,781.80 : 447,791 = 248,394.60 : x
  2. Step 2: Convert to fraction form
    324,781.80/447,791 = 248,394.60/x
  3. Step 3: Cross multiply
    324,781.80x = 447,791 × 248,394.60
  4. Step 4: Simplify right side
    324,781.80x = 111,228,866,328.60
  5. Step 5: Solve for x
    x = 111,228,866,328.60/324,781.80
  6. Step 6: Final answer
    x = 342,472.60

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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.