Home / 378,380.82-522,169.07-208,621.02

Finding the Fourth Proportional to 378,380.82, 522,169.07 and 208,621.02

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Solution

The fourth proportional to 378,380.82, 522,169.07 and 208,621.02 is: 287,898.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,380.82 : 522,169.07 = 208,621.02 : x
  2. Step 2: Convert to fraction form
    378,380.82/522,169.07 = 208,621.02/x
  3. Step 3: Cross multiply
    378,380.82x = 522,169.07 × 208,621.02
  4. Step 4: Simplify right side
    378,380.82x = 108,935,443,995.85
  5. Step 5: Solve for x
    x = 108,935,443,995.85/378,380.82
  6. Step 6: Final answer
    x = 287,898.96

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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.