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Finding the Fourth Proportional to 324,991.91, 487,657.85 and 133,008.85

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Solution

The fourth proportional to 324,991.91, 487,657.85 and 133,008.85 is: 199,582.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,991.91 : 487,657.85 = 133,008.85 : x
  2. Step 2: Convert to fraction form
    324,991.91/487,657.85 = 133,008.85/x
  3. Step 3: Cross multiply
    324,991.91x = 487,657.85 × 133,008.85
  4. Step 4: Simplify right side
    324,991.91x = 64,862,809,766.50
  5. Step 5: Solve for x
    x = 64,862,809,766.50/324,991.91
  6. Step 6: Final answer
    x = 199,582.84

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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.