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Finding the Fourth Proportional to 228,676.95, 315,473.67 and 137,982.33

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Solution

The fourth proportional to 228,676.95, 315,473.67 and 137,982.33 is: 190,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,676.95 : 315,473.67 = 137,982.33 : x
  2. Step 2: Convert to fraction form
    228,676.95/315,473.67 = 137,982.33/x
  3. Step 3: Cross multiply
    228,676.95x = 315,473.67 × 137,982.33
  4. Step 4: Simplify right side
    228,676.95x = 43,529,792,040.25
  5. Step 5: Solve for x
    x = 43,529,792,040.25/228,676.95
  6. Step 6: Final answer
    x = 190,354.96

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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.