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Finding the Fourth Proportional to 394,992.68, 545,076.38 and 225,281.48

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Solution

The fourth proportional to 394,992.68, 545,076.38 and 225,281.48 is: 310,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,992.68 : 545,076.38 = 225,281.48 : x
  2. Step 2: Convert to fraction form
    394,992.68/545,076.38 = 225,281.48/x
  3. Step 3: Cross multiply
    394,992.68x = 545,076.38 × 225,281.48
  4. Step 4: Simplify right side
    394,992.68x = 122,795,613,599.44
  5. Step 5: Solve for x
    x = 122,795,613,599.44/394,992.68
  6. Step 6: Final answer
    x = 310,880.73

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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.