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Finding the Fourth Proportional to 221,570.66, 332,286.28 and 71,776.19

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Solution

The fourth proportional to 221,570.66, 332,286.28 and 71,776.19 is: 107,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,570.66 : 332,286.28 = 71,776.19 : x
  2. Step 2: Convert to fraction form
    221,570.66/332,286.28 = 71,776.19/x
  3. Step 3: Cross multiply
    221,570.66x = 332,286.28 × 71,776.19
  4. Step 4: Simplify right side
    221,570.66x = 23,850,243,639.51
  5. Step 5: Solve for x
    x = 23,850,243,639.51/221,570.66
  6. Step 6: Final answer
    x = 107,641.71

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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.