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Finding the Fourth Proportional to 395,171.52, 545,331.60 and 225,408.48

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Solution

The fourth proportional to 395,171.52, 545,331.60 and 225,408.48 is: 311,060.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,171.52 : 545,331.60 = 225,408.48 : x
  2. Step 2: Convert to fraction form
    395,171.52/545,331.60 = 225,408.48/x
  3. Step 3: Cross multiply
    395,171.52x = 545,331.60 × 225,408.48
  4. Step 4: Simplify right side
    395,171.52x = 122,922,367,051.97
  5. Step 5: Solve for x
    x = 122,922,367,051.97/395,171.52
  6. Step 6: Final answer
    x = 311,060.79

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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.