Home / 215,961.93-324,005.13-66,224.31

Finding the Fourth Proportional to 215,961.93, 324,005.13 and 66,224.31

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Solution

The fourth proportional to 215,961.93, 324,005.13 and 66,224.31 is: 99,355.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,961.93 : 324,005.13 = 66,224.31 : x
  2. Step 2: Convert to fraction form
    215,961.93/324,005.13 = 66,224.31/x
  3. Step 3: Cross multiply
    215,961.93x = 324,005.13 × 66,224.31
  4. Step 4: Simplify right side
    215,961.93x = 21,457,016,170.71
  5. Step 5: Solve for x
    x = 21,457,016,170.71/215,961.93
  6. Step 6: Final answer
    x = 99,355.55

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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.