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Finding the Fourth Proportional to 326,682.40, 489,367.49 and 148,944.91

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Solution

The fourth proportional to 326,682.40, 489,367.49 and 148,944.91 is: 223,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,682.40 : 489,367.49 = 148,944.91 : x
  2. Step 2: Convert to fraction form
    326,682.40/489,367.49 = 148,944.91/x
  3. Step 3: Cross multiply
    326,682.40x = 489,367.49 × 148,944.91
  4. Step 4: Simplify right side
    326,682.40x = 72,888,793,563.41
  5. Step 5: Solve for x
    x = 72,888,793,563.41/326,682.40
  6. Step 6: Final answer
    x = 223,118.22

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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.