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Finding the Fourth Proportional to 220,617.60, 330,926.40 and 87,529.60

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Solution

The fourth proportional to 220,617.60, 330,926.40 and 87,529.60 is: 131,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,617.60 : 330,926.40 = 87,529.60 : x
  2. Step 2: Convert to fraction form
    220,617.60/330,926.40 = 87,529.60/x
  3. Step 3: Cross multiply
    220,617.60x = 330,926.40 × 87,529.60
  4. Step 4: Simplify right side
    220,617.60x = 28,965,855,421.44
  5. Step 5: Solve for x
    x = 28,965,855,421.44/220,617.60
  6. Step 6: Final answer
    x = 131,294.40

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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.