Home / 259,865.08-389,765.22-72,891.16

Finding the Fourth Proportional to 259,865.08, 389,765.22 and 72,891.16

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Solution

The fourth proportional to 259,865.08, 389,765.22 and 72,891.16 is: 109,327.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,865.08 : 389,765.22 = 72,891.16 : x
  2. Step 2: Convert to fraction form
    259,865.08/389,765.22 = 72,891.16/x
  3. Step 3: Cross multiply
    259,865.08x = 389,765.22 × 72,891.16
  4. Step 4: Simplify right side
    259,865.08x = 28,410,439,013.46
  5. Step 5: Solve for x
    x = 28,410,439,013.46/259,865.08
  6. Step 6: Final answer
    x = 109,327.65

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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.