Home / 258,772.19-388,194.73-90,267.94

Finding the Fourth Proportional to 258,772.19, 388,194.73 and 90,267.94

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Solution

The fourth proportional to 258,772.19, 388,194.73 and 90,267.94 is: 135,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,772.19 : 388,194.73 = 90,267.94 : x
  2. Step 2: Convert to fraction form
    258,772.19/388,194.73 = 90,267.94/x
  3. Step 3: Cross multiply
    258,772.19x = 388,194.73 × 90,267.94
  4. Step 4: Simplify right side
    258,772.19x = 35,041,536,671.93
  5. Step 5: Solve for x
    x = 35,041,536,671.93/258,772.19
  6. Step 6: Final answer
    x = 135,414.62

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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.