Home / 215,980.21-324,032.49-66,242.46

Finding the Fourth Proportional to 215,980.21, 324,032.49 and 66,242.46

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Solution

The fourth proportional to 215,980.21, 324,032.49 and 66,242.46 is: 99,382.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,980.21 : 324,032.49 = 66,242.46 : x
  2. Step 2: Convert to fraction form
    215,980.21/324,032.49 = 66,242.46/x
  3. Step 3: Cross multiply
    215,980.21x = 324,032.49 × 66,242.46
  4. Step 4: Simplify right side
    215,980.21x = 21,464,709,257.53
  5. Step 5: Solve for x
    x = 21,464,709,257.53/215,980.21
  6. Step 6: Final answer
    x = 99,382.76

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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.