Home / 259,921.53-389,896.07-72,947.61

Finding the Fourth Proportional to 259,921.53, 389,896.07 and 72,947.61

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Solution

The fourth proportional to 259,921.53, 389,896.07 and 72,947.61 is: 109,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,921.53 : 389,896.07 = 72,947.61 : x
  2. Step 2: Convert to fraction form
    259,921.53/389,896.07 = 72,947.61/x
  3. Step 3: Cross multiply
    259,921.53x = 389,896.07 × 72,947.61
  4. Step 4: Simplify right side
    259,921.53x = 28,441,986,090.15
  5. Step 5: Solve for x
    x = 28,441,986,090.15/259,921.53
  6. Step 6: Final answer
    x = 109,425.28

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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.