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Finding the Fourth Proportional to 406,620.53, 561,110.96 and 225,321.87

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Solution

The fourth proportional to 406,620.53, 561,110.96 and 225,321.87 is: 310,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,620.53 : 561,110.96 = 225,321.87 : x
  2. Step 2: Convert to fraction form
    406,620.53/561,110.96 = 225,321.87/x
  3. Step 3: Cross multiply
    406,620.53x = 561,110.96 × 225,321.87
  4. Step 4: Simplify right side
    406,620.53x = 126,430,570,784.70
  5. Step 5: Solve for x
    x = 126,430,570,784.70/406,620.53
  6. Step 6: Final answer
    x = 310,930.12

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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.