Home / 392,511,680.05-541,669,700.78-216,305,997.66

Finding the Fourth Proportional to 392,511,680.05, 541,669,700.78 and 216,305,997.66

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Solution

The fourth proportional to 392,511,680.05, 541,669,700.78 and 216,305,997.66 is: 298,504,250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,511,680.05 : 541,669,700.78 = 216,305,997.66 : x
  2. Step 2: Convert to fraction form
    392,511,680.05/541,669,700.78 = 216,305,997.66/x
  3. Step 3: Cross multiply
    392,511,680.05x = 541,669,700.78 × 216,305,997.66
  4. Step 4: Simplify right side
    392,511,680.05x = 117,166,405,029,411,568
  5. Step 5: Solve for x
    x = 117,166,405,029,411,568/392,511,680.05
  6. Step 6: Final answer
    x = 298,504,250.92

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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.