Home / 259,531.10-389,058.80-90,959.54

Finding the Fourth Proportional to 259,531.10, 389,058.80 and 90,959.54

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Solution

The fourth proportional to 259,531.10, 389,058.80 and 90,959.54 is: 136,355.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,531.10 : 389,058.80 = 90,959.54 : x
  2. Step 2: Convert to fraction form
    259,531.10/389,058.80 = 90,959.54/x
  3. Step 3: Cross multiply
    259,531.10x = 389,058.80 × 90,959.54
  4. Step 4: Simplify right side
    259,531.10x = 35,388,609,480.95
  5. Step 5: Solve for x
    x = 35,388,609,480.95/259,531.10
  6. Step 6: Final answer
    x = 136,355.95

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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.