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Finding the Fourth Proportional to 220,137.80, 303,822.27 and 123,348.20

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Solution

The fourth proportional to 220,137.80, 303,822.27 and 123,348.20 is: 170,238.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,137.80 : 303,822.27 = 123,348.20 : x
  2. Step 2: Convert to fraction form
    220,137.80/303,822.27 = 123,348.20/x
  3. Step 3: Cross multiply
    220,137.80x = 303,822.27 × 123,348.20
  4. Step 4: Simplify right side
    220,137.80x = 37,475,928,605.30
  5. Step 5: Solve for x
    x = 37,475,928,605.30/220,137.80
  6. Step 6: Final answer
    x = 170,238.50

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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.