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Finding the Fourth Proportional to 326,402.21, 489,209.60 and 168,544.61

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Solution

The fourth proportional to 326,402.21, 489,209.60 and 168,544.61 is: 252,613.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,402.21 : 489,209.60 = 168,544.61 : x
  2. Step 2: Convert to fraction form
    326,402.21/489,209.60 = 168,544.61/x
  3. Step 3: Cross multiply
    326,402.21x = 489,209.60 × 168,544.61
  4. Step 4: Simplify right side
    326,402.21x = 82,453,640,397.53
  5. Step 5: Solve for x
    x = 82,453,640,397.53/326,402.21
  6. Step 6: Final answer
    x = 252,613.61

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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.