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Finding the Fourth Proportional to 220,634.77, 330,886.18 and 80,360.59

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Solution

The fourth proportional to 220,634.77, 330,886.18 and 80,360.59 is: 120,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,634.77 : 330,886.18 = 80,360.59 : x
  2. Step 2: Convert to fraction form
    220,634.77/330,886.18 = 80,360.59/x
  3. Step 3: Cross multiply
    220,634.77x = 330,886.18 × 80,360.59
  4. Step 4: Simplify right side
    220,634.77x = 26,590,208,647.65
  5. Step 5: Solve for x
    x = 26,590,208,647.65/220,634.77
  6. Step 6: Final answer
    x = 120,516.86

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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.