Home / 259,579.40-389,391.77-72,591.44

Finding the Fourth Proportional to 259,579.40, 389,391.77 and 72,591.44

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Solution

The fourth proportional to 259,579.40, 389,391.77 and 72,591.44 is: 108,893.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,579.40 : 389,391.77 = 72,591.44 : x
  2. Step 2: Convert to fraction form
    259,579.40/389,391.77 = 72,591.44/x
  3. Step 3: Cross multiply
    259,579.40x = 389,391.77 × 72,591.44
  4. Step 4: Simplify right side
    259,579.40x = 28,266,507,542.97
  5. Step 5: Solve for x
    x = 28,266,507,542.97/259,579.40
  6. Step 6: Final answer
    x = 108,893.49

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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.