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Finding the Fourth Proportional to 221,821.67, 332,930.25 and 103,559.65

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Solution

The fourth proportional to 221,821.67, 332,930.25 and 103,559.65 is: 155,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,821.67 : 332,930.25 = 103,559.65 : x
  2. Step 2: Convert to fraction form
    221,821.67/332,930.25 = 103,559.65/x
  3. Step 3: Cross multiply
    221,821.67x = 332,930.25 × 103,559.65
  4. Step 4: Simplify right side
    221,821.67x = 34,478,139,332.09
  5. Step 5: Solve for x
    x = 34,478,139,332.09/221,821.67
  6. Step 6: Final answer
    x = 155,431.79

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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.