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Finding the Fourth Proportional to 220,645.83, 330,968.75 and 154,215.71

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Solution

The fourth proportional to 220,645.83, 330,968.75 and 154,215.71 is: 231,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,645.83 : 330,968.75 = 154,215.71 : x
  2. Step 2: Convert to fraction form
    220,645.83/330,968.75 = 154,215.71/x
  3. Step 3: Cross multiply
    220,645.83x = 330,968.75 × 154,215.71
  4. Step 4: Simplify right side
    220,645.83x = 51,040,579,584.27
  5. Step 5: Solve for x
    x = 51,040,579,584.27/220,645.83
  6. Step 6: Final answer
    x = 231,323.56

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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.