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Finding the Fourth Proportional to 259,755.45, 389,655.44 and 91,261.27

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Solution

The fourth proportional to 259,755.45, 389,655.44 and 91,261.27 is: 136,899.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,755.45 : 389,655.44 = 91,261.27 : x
  2. Step 2: Convert to fraction form
    259,755.45/389,655.44 = 91,261.27/x
  3. Step 3: Cross multiply
    259,755.45x = 389,655.44 × 91,261.27
  4. Step 4: Simplify right side
    259,755.45x = 35,560,450,316.81
  5. Step 5: Solve for x
    x = 35,560,450,316.81/259,755.45
  6. Step 6: Final answer
    x = 136,899.73

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1.5x scale

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.