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Finding the Fourth Proportional to 326,446.20, 489,472.47 and 149,102.37

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Solution

The fourth proportional to 326,446.20, 489,472.47 and 149,102.37 is: 223,563.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,446.20 : 489,472.47 = 149,102.37 : x
  2. Step 2: Convert to fraction form
    326,446.20/489,472.47 = 149,102.37/x
  3. Step 3: Cross multiply
    326,446.20x = 489,472.47 × 149,102.37
  4. Step 4: Simplify right side
    326,446.20x = 72,981,505,326.75
  5. Step 5: Solve for x
    x = 72,981,505,326.75/326,446.20
  6. Step 6: Final answer
    x = 223,563.65

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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.