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Finding the Fourth Proportional to 259,220.52, 388,793.86 and 81,704.45

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Solution

The fourth proportional to 259,220.52, 388,793.86 and 81,704.45 is: 122,545.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,220.52 : 388,793.86 = 81,704.45 : x
  2. Step 2: Convert to fraction form
    259,220.52/388,793.86 = 81,704.45/x
  3. Step 3: Cross multiply
    259,220.52x = 388,793.86 × 81,704.45
  4. Step 4: Simplify right side
    259,220.52x = 31,766,189,262.40
  5. Step 5: Solve for x
    x = 31,766,189,262.40/259,220.52
  6. Step 6: Final answer
    x = 122,545.04

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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.