Home / 259,619.60-389,648.10-101,961.20

Finding the Fourth Proportional to 259,619.60, 389,648.10 and 101,961.20

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Solution

The fourth proportional to 259,619.60, 389,648.10 and 101,961.20 is: 153,027.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,619.60 : 389,648.10 = 101,961.20 : x
  2. Step 2: Convert to fraction form
    259,619.60/389,648.10 = 101,961.20/x
  3. Step 3: Cross multiply
    259,619.60x = 389,648.10 × 101,961.20
  4. Step 4: Simplify right side
    259,619.60x = 39,728,987,853.72
  5. Step 5: Solve for x
    x = 39,728,987,853.72/259,619.60
  6. Step 6: Final answer
    x = 153,027.69

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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.