Home / 259,123.20-389,145.60-189,081.60

Finding the Fourth Proportional to 259,123.20, 389,145.60 and 189,081.60

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Solution

The fourth proportional to 259,123.20, 389,145.60 and 189,081.60 is: 283,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,123.20 : 389,145.60 = 189,081.60 : x
  2. Step 2: Convert to fraction form
    259,123.20/389,145.60 = 189,081.60/x
  3. Step 3: Cross multiply
    259,123.20x = 389,145.60 × 189,081.60
  4. Step 4: Simplify right side
    259,123.20x = 73,580,272,680.96
  5. Step 5: Solve for x
    x = 73,580,272,680.96/259,123.20
  6. Step 6: Final answer
    x = 283,958.64

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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.