Home / 216,372.72-324,569.10-66,619.72

Finding the Fourth Proportional to 216,372.72, 324,569.10 and 66,619.72

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Solution

The fourth proportional to 216,372.72, 324,569.10 and 66,619.72 is: 99,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,372.72 : 324,569.10 = 66,619.72 : x
  2. Step 2: Convert to fraction form
    216,372.72/324,569.10 = 66,619.72/x
  3. Step 3: Cross multiply
    216,372.72x = 324,569.10 × 66,619.72
  4. Step 4: Simplify right side
    216,372.72x = 21,622,702,562.65
  5. Step 5: Solve for x
    x = 21,622,702,562.65/216,372.72
  6. Step 6: Final answer
    x = 99,932.67

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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.