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Finding the Fourth Proportional to 301,170, 451,780.92 and 79,554

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Solution

The fourth proportional to 301,170, 451,780.92 and 79,554 is: 119,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,170 : 451,780.92 = 79,554 : x
  2. Step 2: Convert to fraction form
    301,170/451,780.92 = 79,554/x
  3. Step 3: Cross multiply
    301,170x = 451,780.92 × 79,554
  4. Step 4: Simplify right side
    301,170x = 35,940,979,309.68
  5. Step 5: Solve for x
    x = 35,940,979,309.68/301,170
  6. Step 6: Final answer
    x = 119,337.85

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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.