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Finding the Fourth Proportional to 392,612.85, 541,808.33 and 222,849.81

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Solution

The fourth proportional to 392,612.85, 541,808.33 and 222,849.81 is: 307,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,612.85 : 541,808.33 = 222,849.81 : x
  2. Step 2: Convert to fraction form
    392,612.85/541,808.33 = 222,849.81/x
  3. Step 3: Cross multiply
    392,612.85x = 541,808.33 × 222,849.81
  4. Step 4: Simplify right side
    392,612.85x = 120,741,882,282.67
  5. Step 5: Solve for x
    x = 120,741,882,282.67/392,612.85
  6. Step 6: Final answer
    x = 307,534.21

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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.