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Finding the Fourth Proportional to 215,255.52, 322,884 and 74,916

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Solution

The fourth proportional to 215,255.52, 322,884 and 74,916 is: 112,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,255.52 : 322,884 = 74,916 : x
  2. Step 2: Convert to fraction form
    215,255.52/322,884 = 74,916/x
  3. Step 3: Cross multiply
    215,255.52x = 322,884 × 74,916
  4. Step 4: Simplify right side
    215,255.52x = 24,189,177,744
  5. Step 5: Solve for x
    x = 24,189,177,744/215,255.52
  6. Step 6: Final answer
    x = 112,374.25

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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.