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Finding the Fourth Proportional to 325,285.11, 487,806.31 and 111,992.77

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Solution

The fourth proportional to 325,285.11, 487,806.31 and 111,992.77 is: 167,947.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,285.11 : 487,806.31 = 111,992.77 : x
  2. Step 2: Convert to fraction form
    325,285.11/487,806.31 = 111,992.77/x
  3. Step 3: Cross multiply
    325,285.11x = 487,806.31 × 111,992.77
  4. Step 4: Simplify right side
    325,285.11x = 54,630,778,800.85
  5. Step 5: Solve for x
    x = 54,630,778,800.85/325,285.11
  6. Step 6: Final answer
    x = 167,947.37

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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.