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Finding the Fourth Proportional to 228,305.87, 315,040.64 and 154,568.30

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Solution

The fourth proportional to 228,305.87, 315,040.64 and 154,568.30 is: 213,289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,305.87 : 315,040.64 = 154,568.30 : x
  2. Step 2: Convert to fraction form
    228,305.87/315,040.64 = 154,568.30/x
  3. Step 3: Cross multiply
    228,305.87x = 315,040.64 × 154,568.30
  4. Step 4: Simplify right side
    228,305.87x = 48,695,297,329.73
  5. Step 5: Solve for x
    x = 48,695,297,329.73/228,305.87
  6. Step 6: Final answer
    x = 213,289.73

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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.