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Finding the Fourth Proportional to 258,519.01, 388,141.81 and 132,249.83

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Solution

The fourth proportional to 258,519.01, 388,141.81 and 132,249.83 is: 198,560.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,519.01 : 388,141.81 = 132,249.83 : x
  2. Step 2: Convert to fraction form
    258,519.01/388,141.81 = 132,249.83/x
  3. Step 3: Cross multiply
    258,519.01x = 388,141.81 × 132,249.83
  4. Step 4: Simplify right side
    258,519.01x = 51,331,687,220.81
  5. Step 5: Solve for x
    x = 51,331,687,220.81/258,519.01
  6. Step 6: Final answer
    x = 198,560.59

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1.5x scale

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.