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Finding the Fourth Proportional to 392,367.74, 541,448.91 and 217,949.22

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Solution

The fourth proportional to 392,367.74, 541,448.91 and 217,949.22 is: 300,759.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,367.74 : 541,448.91 = 217,949.22 : x
  2. Step 2: Convert to fraction form
    392,367.74/541,448.91 = 217,949.22/x
  3. Step 3: Cross multiply
    392,367.74x = 541,448.91 × 217,949.22
  4. Step 4: Simplify right side
    392,367.74x = 118,008,367,604.35
  5. Step 5: Solve for x
    x = 118,008,367,604.35/392,367.74
  6. Step 6: Final answer
    x = 300,759.61

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1.5x scale

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.