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Finding the Fourth Proportional to 248,389.92, 372,640.22 and 90,618.36

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Solution

The fourth proportional to 248,389.92, 372,640.22 and 90,618.36 is: 135,947.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,389.92 : 372,640.22 = 90,618.36 : x
  2. Step 2: Convert to fraction form
    248,389.92/372,640.22 = 90,618.36/x
  3. Step 3: Cross multiply
    248,389.92x = 372,640.22 × 90,618.36
  4. Step 4: Simplify right side
    248,389.92x = 33,768,045,606.44
  5. Step 5: Solve for x
    x = 33,768,045,606.44/248,389.92
  6. Step 6: Final answer
    x = 135,947.73

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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.