Home / 216,429.24-324,469.02-90,164.61

Finding the Fourth Proportional to 216,429.24, 324,469.02 and 90,164.61

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Solution

The fourth proportional to 216,429.24, 324,469.02 and 90,164.61 is: 135,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,429.24 : 324,469.02 = 90,164.61 : x
  2. Step 2: Convert to fraction form
    216,429.24/324,469.02 = 90,164.61/x
  3. Step 3: Cross multiply
    216,429.24x = 324,469.02 × 90,164.61
  4. Step 4: Simplify right side
    216,429.24x = 29,255,622,645.38
  5. Step 5: Solve for x
    x = 29,255,622,645.38/216,429.24
  6. Step 6: Final answer
    x = 135,174.08

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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.