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Finding the Fourth Proportional to 251,507.92, 377,321.82 and 74,020.72

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Solution

The fourth proportional to 251,507.92, 377,321.82 and 74,020.72 is: 111,048.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,507.92 : 377,321.82 = 74,020.72 : x
  2. Step 2: Convert to fraction form
    251,507.92/377,321.82 = 74,020.72/x
  3. Step 3: Cross multiply
    251,507.92x = 377,321.82 × 74,020.72
  4. Step 4: Simplify right side
    251,507.92x = 27,929,632,788.11
  5. Step 5: Solve for x
    x = 27,929,632,788.11/251,507.92
  6. Step 6: Final answer
    x = 111,048.72

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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.