Home / 259,737.88-389,645.77-91,228.50

Finding the Fourth Proportional to 259,737.88, 389,645.77 and 91,228.50

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Solution

The fourth proportional to 259,737.88, 389,645.77 and 91,228.50 is: 136,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,737.88 : 389,645.77 = 91,228.50 : x
  2. Step 2: Convert to fraction form
    259,737.88/389,645.77 = 91,228.50/x
  3. Step 3: Cross multiply
    259,737.88x = 389,645.77 × 91,228.50
  4. Step 4: Simplify right side
    259,737.88x = 35,546,799,071.43
  5. Step 5: Solve for x
    x = 35,546,799,071.43/259,737.88
  6. Step 6: Final answer
    x = 136,856.43

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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.