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Finding the Fourth Proportional to 248,003.40, 372,102.30 and 90,247.80

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Solution

The fourth proportional to 248,003.40, 372,102.30 and 90,247.80 is: 135,407.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,003.40 : 372,102.30 = 90,247.80 : x
  2. Step 2: Convert to fraction form
    248,003.40/372,102.30 = 90,247.80/x
  3. Step 3: Cross multiply
    248,003.40x = 372,102.30 × 90,247.80
  4. Step 4: Simplify right side
    248,003.40x = 33,581,413,949.94
  5. Step 5: Solve for x
    x = 33,581,413,949.94/248,003.40
  6. Step 6: Final answer
    x = 135,407.07

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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.