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Finding the Fourth Proportional to 406,620.50, 561,137.60 and 225,335.41

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Solution

The fourth proportional to 406,620.50, 561,137.60 and 225,335.41 is: 310,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,620.50 : 561,137.60 = 225,335.41 : x
  2. Step 2: Convert to fraction form
    406,620.50/561,137.60 = 225,335.41/x
  3. Step 3: Cross multiply
    406,620.50x = 561,137.60 × 225,335.41
  4. Step 4: Simplify right side
    406,620.50x = 126,444,171,162.42
  5. Step 5: Solve for x
    x = 126,444,171,162.42/406,620.50
  6. Step 6: Final answer
    x = 310,963.59

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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.