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Finding the Fourth Proportional to 248,121.96, 372,328.74 and 90,359.88

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Solution

The fourth proportional to 248,121.96, 372,328.74 and 90,359.88 is: 135,592.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,121.96 : 372,328.74 = 90,359.88 : x
  2. Step 2: Convert to fraction form
    248,121.96/372,328.74 = 90,359.88/x
  3. Step 3: Cross multiply
    248,121.96x = 372,328.74 × 90,359.88
  4. Step 4: Simplify right side
    248,121.96x = 33,643,580,266.95
  5. Step 5: Solve for x
    x = 33,643,580,266.95/248,121.96
  6. Step 6: Final answer
    x = 135,592.92

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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.