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Finding the Fourth Proportional to 442,759.20, 664,009.20 and 158,416.80

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Solution

The fourth proportional to 442,759.20, 664,009.20 and 158,416.80 is: 237,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,759.20 : 664,009.20 = 158,416.80 : x
  2. Step 2: Convert to fraction form
    442,759.20/664,009.20 = 158,416.80/x
  3. Step 3: Cross multiply
    442,759.20x = 664,009.20 × 158,416.80
  4. Step 4: Simplify right side
    442,759.20x = 105,190,212,634.56
  5. Step 5: Solve for x
    x = 105,190,212,634.56/442,759.20
  6. Step 6: Final answer
    x = 237,578.83

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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.