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Finding the Fourth Proportional to 228,679.67, 315,601.31 and 131,887.31

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Solution

The fourth proportional to 228,679.67, 315,601.31 and 131,887.31 is: 182,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,679.67 : 315,601.31 = 131,887.31 : x
  2. Step 2: Convert to fraction form
    228,679.67/315,601.31 = 131,887.31/x
  3. Step 3: Cross multiply
    228,679.67x = 315,601.31 × 131,887.31
  4. Step 4: Simplify right side
    228,679.67x = 41,623,806,560.09
  5. Step 5: Solve for x
    x = 41,623,806,560.09/228,679.67
  6. Step 6: Final answer
    x = 182,017.96

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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.