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Finding the Fourth Proportional to 216,418.51, 324,644.09 and 64,603.60

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Solution

The fourth proportional to 216,418.51, 324,644.09 and 64,603.60 is: 96,910.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,418.51 : 324,644.09 = 64,603.60 : x
  2. Step 2: Convert to fraction form
    216,418.51/324,644.09 = 64,603.60/x
  3. Step 3: Cross multiply
    216,418.51x = 324,644.09 × 64,603.60
  4. Step 4: Simplify right side
    216,418.51x = 20,973,176,932.72
  5. Step 5: Solve for x
    x = 20,973,176,932.72/216,418.51
  6. Step 6: Final answer
    x = 96,910.27

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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.