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Finding the Fourth Proportional to 248,078.76, 372,120.42 and 79,599.42

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Solution

The fourth proportional to 248,078.76, 372,120.42 and 79,599.42 is: 119,399.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,078.76 : 372,120.42 = 79,599.42 : x
  2. Step 2: Convert to fraction form
    248,078.76/372,120.42 = 79,599.42/x
  3. Step 3: Cross multiply
    248,078.76x = 372,120.42 × 79,599.42
  4. Step 4: Simplify right side
    248,078.76x = 29,620,569,602.16
  5. Step 5: Solve for x
    x = 29,620,569,602.16/248,078.76
  6. Step 6: Final answer
    x = 119,399.86

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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.