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Finding the Fourth Proportional to 220,121.28, 303,767.76 and 119,519.28

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Solution

The fourth proportional to 220,121.28, 303,767.76 and 119,519.28 is: 164,936.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,121.28 : 303,767.76 = 119,519.28 : x
  2. Step 2: Convert to fraction form
    220,121.28/303,767.76 = 119,519.28/x
  3. Step 3: Cross multiply
    220,121.28x = 303,767.76 × 119,519.28
  4. Step 4: Simplify right side
    220,121.28x = 36,306,103,962.41
  5. Step 5: Solve for x
    x = 36,306,103,962.41/220,121.28
  6. Step 6: Final answer
    x = 164,936.82

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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.