Home / 259,521.60-389,295.20-135,105.60

Finding the Fourth Proportional to 259,521.60, 389,295.20 and 135,105.60

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Solution

The fourth proportional to 259,521.60, 389,295.20 and 135,105.60 is: 202,665.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,521.60 : 389,295.20 = 135,105.60 : x
  2. Step 2: Convert to fraction form
    259,521.60/389,295.20 = 135,105.60/x
  3. Step 3: Cross multiply
    259,521.60x = 389,295.20 × 135,105.60
  4. Step 4: Simplify right side
    259,521.60x = 52,595,961,573.12
  5. Step 5: Solve for x
    x = 52,595,961,573.12/259,521.60
  6. Step 6: Final answer
    x = 202,665.06

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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.