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Finding the Fourth Proportional to 492,163.78, 738,245.70 and 159,739.78

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Solution

The fourth proportional to 492,163.78, 738,245.70 and 159,739.78 is: 239,609.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,163.78 : 738,245.70 = 159,739.78 : x
  2. Step 2: Convert to fraction form
    492,163.78/738,245.70 = 159,739.78/x
  3. Step 3: Cross multiply
    492,163.78x = 738,245.70 × 159,739.78
  4. Step 4: Simplify right side
    492,163.78x = 117,927,205,703.95
  5. Step 5: Solve for x
    x = 117,927,205,703.95/492,163.78
  6. Step 6: Final answer
    x = 239,609.68

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Similar ratio
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1.5x scale

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.