Home / 378,822.35-522,777.96-206,741.72

Finding the Fourth Proportional to 378,822.35, 522,777.96 and 206,741.72

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Solution

The fourth proportional to 378,822.35, 522,777.96 and 206,741.72 is: 285,305.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,822.35 : 522,777.96 = 206,741.72 : x
  2. Step 2: Convert to fraction form
    378,822.35/522,777.96 = 206,741.72/x
  3. Step 3: Cross multiply
    378,822.35x = 522,777.96 × 206,741.72
  4. Step 4: Simplify right side
    378,822.35x = 108,080,014,628.49
  5. Step 5: Solve for x
    x = 108,080,014,628.49/378,822.35
  6. Step 6: Final answer
    x = 285,305.27

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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.