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Finding the Fourth Proportional to 259,650.60, 389,322.30 and 135,234.60

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Solution

The fourth proportional to 259,650.60, 389,322.30 and 135,234.60 is: 202,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,650.60 : 389,322.30 = 135,234.60 : x
  2. Step 2: Convert to fraction form
    259,650.60/389,322.30 = 135,234.60/x
  3. Step 3: Cross multiply
    259,650.60x = 389,322.30 × 135,234.60
  4. Step 4: Simplify right side
    259,650.60x = 52,649,845,511.58
  5. Step 5: Solve for x
    x = 52,649,845,511.58/259,650.60
  6. Step 6: Final answer
    x = 202,771.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.