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Finding the Fourth Proportional to 216,183.50, 324,270.75 and 72,099.70

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Solution

The fourth proportional to 216,183.50, 324,270.75 and 72,099.70 is: 108,148.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,183.50 : 324,270.75 = 72,099.70 : x
  2. Step 2: Convert to fraction form
    216,183.50/324,270.75 = 72,099.70/x
  3. Step 3: Cross multiply
    216,183.50x = 324,270.75 × 72,099.70
  4. Step 4: Simplify right side
    216,183.50x = 23,379,823,253.47
  5. Step 5: Solve for x
    x = 23,379,823,253.47/216,183.50
  6. Step 6: Final answer
    x = 108,148.05

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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.