Home / 259,736.16-389,626.40-91,241.76

Finding the Fourth Proportional to 259,736.16, 389,626.40 and 91,241.76

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Solution

The fourth proportional to 259,736.16, 389,626.40 and 91,241.76 is: 136,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,736.16 : 389,626.40 = 91,241.76 : x
  2. Step 2: Convert to fraction form
    259,736.16/389,626.40 = 91,241.76/x
  3. Step 3: Cross multiply
    259,736.16x = 389,626.40 × 91,241.76
  4. Step 4: Simplify right side
    259,736.16x = 35,550,198,478.46
  5. Step 5: Solve for x
    x = 35,550,198,478.46/259,736.16
  6. Step 6: Final answer
    x = 136,870.42

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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.