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Finding the Fourth Proportional to 456,745.45, 685,068.95 and 119,819.88

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Solution

The fourth proportional to 456,745.45, 685,068.95 and 119,819.88 is: 179,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,745.45 : 685,068.95 = 119,819.88 : x
  2. Step 2: Convert to fraction form
    456,745.45/685,068.95 = 119,819.88/x
  3. Step 3: Cross multiply
    456,745.45x = 685,068.95 × 119,819.88
  4. Step 4: Simplify right side
    456,745.45x = 82,084,879,380.73
  5. Step 5: Solve for x
    x = 82,084,879,380.73/456,745.45
  6. Step 6: Final answer
    x = 179,716.91

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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.