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Finding the Fourth Proportional to 248,538.78, 372,863.52 and 90,766.98

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Solution

The fourth proportional to 248,538.78, 372,863.52 and 90,766.98 is: 136,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,538.78 : 372,863.52 = 90,766.98 : x
  2. Step 2: Convert to fraction form
    248,538.78/372,863.52 = 90,766.98/x
  3. Step 3: Cross multiply
    248,538.78x = 372,863.52 × 90,766.98
  4. Step 4: Simplify right side
    248,538.78x = 33,843,695,662.57
  5. Step 5: Solve for x
    x = 33,843,695,662.57/248,538.78
  6. Step 6: Final answer
    x = 136,170.68

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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.