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Finding the Fourth Proportional to 220,517.42, 330,885.58 and 87,394.72

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Solution

The fourth proportional to 220,517.42, 330,885.58 and 87,394.72 is: 131,135.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,517.42 : 330,885.58 = 87,394.72 : x
  2. Step 2: Convert to fraction form
    220,517.42/330,885.58 = 87,394.72/x
  3. Step 3: Cross multiply
    220,517.42x = 330,885.58 × 87,394.72
  4. Step 4: Simplify right side
    220,517.42x = 28,917,652,616.14
  5. Step 5: Solve for x
    x = 28,917,652,616.14/220,517.42
  6. Step 6: Final answer
    x = 131,135.46

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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.