Home / 216,429.78-324,760.73-90,157.26

Finding the Fourth Proportional to 216,429.78, 324,760.73 and 90,157.26

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Solution

The fourth proportional to 216,429.78, 324,760.73 and 90,157.26 is: 135,284.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,429.78 : 324,760.73 = 90,157.26 : x
  2. Step 2: Convert to fraction form
    216,429.78/324,760.73 = 90,157.26/x
  3. Step 3: Cross multiply
    216,429.78x = 324,760.73 × 90,157.26
  4. Step 4: Simplify right side
    216,429.78x = 29,279,537,121.61
  5. Step 5: Solve for x
    x = 29,279,537,121.61/216,429.78
  6. Step 6: Final answer
    x = 135,284.23

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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.