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Finding the Fourth Proportional to 220,581.60, 330,872.40 and 87,493.60

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Solution

The fourth proportional to 220,581.60, 330,872.40 and 87,493.60 is: 131,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,581.60 : 330,872.40 = 87,493.60 : x
  2. Step 2: Convert to fraction form
    220,581.60/330,872.40 = 87,493.60/x
  3. Step 3: Cross multiply
    220,581.60x = 330,872.40 × 87,493.60
  4. Step 4: Simplify right side
    220,581.60x = 28,949,217,416.64
  5. Step 5: Solve for x
    x = 28,949,217,416.64/220,581.60
  6. Step 6: Final answer
    x = 131,240.40

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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.