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Finding the Fourth Proportional to 220,372.34, 330,364.62 and 87,345.96

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Solution

The fourth proportional to 220,372.34, 330,364.62 and 87,345.96 is: 130,942.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,372.34 : 330,364.62 = 87,345.96 : x
  2. Step 2: Convert to fraction form
    220,372.34/330,364.62 = 87,345.96/x
  3. Step 3: Cross multiply
    220,372.34x = 330,364.62 × 87,345.96
  4. Step 4: Simplify right side
    220,372.34x = 28,856,014,883.94
  5. Step 5: Solve for x
    x = 28,856,014,883.94/220,372.34
  6. Step 6: Final answer
    x = 130,942.09

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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.