Home / 259,079.41-388,633.04-81,600.31

Finding the Fourth Proportional to 259,079.41, 388,633.04 and 81,600.31

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Solution

The fourth proportional to 259,079.41, 388,633.04 and 81,600.31 is: 122,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,079.41 : 388,633.04 = 81,600.31 : x
  2. Step 2: Convert to fraction form
    259,079.41/388,633.04 = 81,600.31/x
  3. Step 3: Cross multiply
    259,079.41x = 388,633.04 × 81,600.31
  4. Step 4: Simplify right side
    259,079.41x = 31,712,576,924.03
  5. Step 5: Solve for x
    x = 31,712,576,924.03/259,079.41
  6. Step 6: Final answer
    x = 122,404.85

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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.