Home / 258,747.57-387,998.46-90,247.44

Finding the Fourth Proportional to 258,747.57, 387,998.46 and 90,247.44

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Solution

The fourth proportional to 258,747.57, 387,998.46 and 90,247.44 is: 135,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,747.57 : 387,998.46 = 90,247.44 : x
  2. Step 2: Convert to fraction form
    258,747.57/387,998.46 = 90,247.44/x
  3. Step 3: Cross multiply
    258,747.57x = 387,998.46 × 90,247.44
  4. Step 4: Simplify right side
    258,747.57x = 35,015,867,738.94
  5. Step 5: Solve for x
    x = 35,015,867,738.94/258,747.57
  6. Step 6: Final answer
    x = 135,328.30

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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.