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Finding the Fourth Proportional to 220,137.80, 303,791.48 and 129,497.48

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Solution

The fourth proportional to 220,137.80, 303,791.48 and 129,497.48 is: 178,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,137.80 : 303,791.48 = 129,497.48 : x
  2. Step 2: Convert to fraction form
    220,137.80/303,791.48 = 129,497.48/x
  3. Step 3: Cross multiply
    220,137.80x = 303,791.48 × 129,497.48
  4. Step 4: Simplify right side
    220,137.80x = 39,340,231,105.47
  5. Step 5: Solve for x
    x = 39,340,231,105.47/220,137.80
  6. Step 6: Final answer
    x = 178,707.30

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1.5x scale

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.