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Finding the Fourth Proportional to 228,754.80, 315,699.12 and 131,976

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Solution

The fourth proportional to 228,754.80, 315,699.12 and 131,976 is: 182,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,754.80 : 315,699.12 = 131,976 : x
  2. Step 2: Convert to fraction form
    228,754.80/315,699.12 = 131,976/x
  3. Step 3: Cross multiply
    228,754.80x = 315,699.12 × 131,976
  4. Step 4: Simplify right side
    228,754.80x = 41,664,707,061.12
  5. Step 5: Solve for x
    x = 41,664,707,061.12/228,754.80
  6. Step 6: Final answer
    x = 182,136.97

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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.