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Finding the Fourth Proportional to 200,728.29, 301,029.66 and 72,628.41

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Solution

The fourth proportional to 200,728.29, 301,029.66 and 72,628.41 is: 108,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,728.29 : 301,029.66 = 72,628.41 : x
  2. Step 2: Convert to fraction form
    200,728.29/301,029.66 = 72,628.41/x
  3. Step 3: Cross multiply
    200,728.29x = 301,029.66 × 72,628.41
  4. Step 4: Simplify right side
    200,728.29x = 21,863,305,568.64
  5. Step 5: Solve for x
    x = 21,863,305,568.64/200,728.29
  6. Step 6: Final answer
    x = 108,919.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.