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Finding the Fourth Proportional to 392,459.83, 541,669.22 and 222,709.75

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Solution

The fourth proportional to 392,459.83, 541,669.22 and 222,709.75 is: 307,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,459.83 : 541,669.22 = 222,709.75 : x
  2. Step 2: Convert to fraction form
    392,459.83/541,669.22 = 222,709.75/x
  3. Step 3: Cross multiply
    392,459.83x = 541,669.22 × 222,709.75
  4. Step 4: Simplify right side
    392,459.83x = 120,635,016,568.90
  5. Step 5: Solve for x
    x = 120,635,016,568.90/392,459.83
  6. Step 6: Final answer
    x = 307,381.82

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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.