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Finding the Fourth Proportional to 216,313.92, 324,529.44 and 66,551.04

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Solution

The fourth proportional to 216,313.92, 324,529.44 and 66,551.04 is: 99,844.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,313.92 : 324,529.44 = 66,551.04 : x
  2. Step 2: Convert to fraction form
    216,313.92/324,529.44 = 66,551.04/x
  3. Step 3: Cross multiply
    216,313.92x = 324,529.44 × 66,551.04
  4. Step 4: Simplify right side
    216,313.92x = 21,597,771,742.62
  5. Step 5: Solve for x
    x = 21,597,771,742.62/216,313.92
  6. Step 6: Final answer
    x = 99,844.58

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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.