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Finding the Fourth Proportional to 220,555.91, 330,943.32 and 87,433.22

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Solution

The fourth proportional to 220,555.91, 330,943.32 and 87,433.22 is: 131,193.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,555.91 : 330,943.32 = 87,433.22 : x
  2. Step 2: Convert to fraction form
    220,555.91/330,943.32 = 87,433.22/x
  3. Step 3: Cross multiply
    220,555.91x = 330,943.32 × 87,433.22
  4. Step 4: Simplify right side
    220,555.91x = 28,935,440,932.45
  5. Step 5: Solve for x
    x = 28,935,440,932.45/220,555.91
  6. Step 6: Final answer
    x = 131,193.22

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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.