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Finding the Fourth Proportional to 220,517.31, 330,885.27 and 87,394.62

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Solution

The fourth proportional to 220,517.31, 330,885.27 and 87,394.62 is: 131,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,517.31 : 330,885.27 = 87,394.62 : x
  2. Step 2: Convert to fraction form
    220,517.31/330,885.27 = 87,394.62/x
  3. Step 3: Cross multiply
    220,517.31x = 330,885.27 × 87,394.62
  4. Step 4: Simplify right side
    220,517.31x = 28,917,592,435.25
  5. Step 5: Solve for x
    x = 28,917,592,435.25/220,517.31
  6. Step 6: Final answer
    x = 131,135.25

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1.5x scale

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.