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Finding the Fourth Proportional to 220,815.84, 331,007.76 and 87,651.84

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Solution

The fourth proportional to 220,815.84, 331,007.76 and 87,651.84 is: 131,392.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,815.84 : 331,007.76 = 87,651.84 : x
  2. Step 2: Convert to fraction form
    220,815.84/331,007.76 = 87,651.84/x
  3. Step 3: Cross multiply
    220,815.84x = 331,007.76 × 87,651.84
  4. Step 4: Simplify right side
    220,815.84x = 29,013,439,218.28
  5. Step 5: Solve for x
    x = 29,013,439,218.28/220,815.84
  6. Step 6: Final answer
    x = 131,392.02

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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.