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Finding the Fourth Proportional to 213,855.24, 320,855.28 and 80,773.92

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Solution

The fourth proportional to 213,855.24, 320,855.28 and 80,773.92 is: 121,188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,855.24 : 320,855.28 = 80,773.92 : x
  2. Step 2: Convert to fraction form
    213,855.24/320,855.28 = 80,773.92/x
  3. Step 3: Cross multiply
    213,855.24x = 320,855.28 × 80,773.92
  4. Step 4: Simplify right side
    213,855.24x = 25,916,738,718.30
  5. Step 5: Solve for x
    x = 25,916,738,718.30/213,855.24
  6. Step 6: Final answer
    x = 121,188.23

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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.