Home / 259,224.39-388,836.59-81,749.34

Finding the Fourth Proportional to 259,224.39, 388,836.59 and 81,749.34

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Solution

The fourth proportional to 259,224.39, 388,836.59 and 81,749.34 is: 122,624.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,224.39 : 388,836.59 = 81,749.34 : x
  2. Step 2: Convert to fraction form
    259,224.39/388,836.59 = 81,749.34/x
  3. Step 3: Cross multiply
    259,224.39x = 388,836.59 × 81,749.34
  4. Step 4: Simplify right side
    259,224.39x = 31,787,135,630.09
  5. Step 5: Solve for x
    x = 31,787,135,630.09/259,224.39
  6. Step 6: Final answer
    x = 122,624.01

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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.