Home / 259,757.20-389,538.60-91,212.40

Finding the Fourth Proportional to 259,757.20, 389,538.60 and 91,212.40

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Solution

The fourth proportional to 259,757.20, 389,538.60 and 91,212.40 is: 136,784.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,757.20 : 389,538.60 = 91,212.40 : x
  2. Step 2: Convert to fraction form
    259,757.20/389,538.60 = 91,212.40/x
  3. Step 3: Cross multiply
    259,757.20x = 389,538.60 × 91,212.40
  4. Step 4: Simplify right side
    259,757.20x = 35,530,750,598.64
  5. Step 5: Solve for x
    x = 35,530,750,598.64/259,757.20
  6. Step 6: Final answer
    x = 136,784.47

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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.