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Finding the Fourth Proportional to 220,803.24, 331,254 and 80,561.82

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Solution

The fourth proportional to 220,803.24, 331,254 and 80,561.82 is: 120,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,803.24 : 331,254 = 80,561.82 : x
  2. Step 2: Convert to fraction form
    220,803.24/331,254 = 80,561.82/x
  3. Step 3: Cross multiply
    220,803.24x = 331,254 × 80,561.82
  4. Step 4: Simplify right side
    220,803.24x = 26,686,425,122.28
  5. Step 5: Solve for x
    x = 26,686,425,122.28/220,803.24
  6. Step 6: Final answer
    x = 120,860.66

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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.