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Finding the Fourth Proportional to 325,830.62, 489,009.99 and 168,104.18

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Solution

The fourth proportional to 325,830.62, 489,009.99 and 168,104.18 is: 252,292.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,830.62 : 489,009.99 = 168,104.18 : x
  2. Step 2: Convert to fraction form
    325,830.62/489,009.99 = 168,104.18/x
  3. Step 3: Cross multiply
    325,830.62x = 489,009.99 × 168,104.18
  4. Step 4: Simplify right side
    325,830.62x = 82,204,623,380.76
  5. Step 5: Solve for x
    x = 82,204,623,380.76/325,830.62
  6. Step 6: Final answer
    x = 252,292.51

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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.