Home / 259,771.20-389,559.60-91,226.40

Finding the Fourth Proportional to 259,771.20, 389,559.60 and 91,226.40

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Solution

The fourth proportional to 259,771.20, 389,559.60 and 91,226.40 is: 136,805.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,771.20 : 389,559.60 = 91,226.40 : x
  2. Step 2: Convert to fraction form
    259,771.20/389,559.60 = 91,226.40/x
  3. Step 3: Cross multiply
    259,771.20x = 389,559.60 × 91,226.40
  4. Step 4: Simplify right side
    259,771.20x = 35,538,119,893.44
  5. Step 5: Solve for x
    x = 35,538,119,893.44/259,771.20
  6. Step 6: Final answer
    x = 136,805.47

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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.