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Finding the Fourth Proportional to 220,179.72, 330,316.74 and 68,373.66

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Solution

The fourth proportional to 220,179.72, 330,316.74 and 68,373.66 is: 102,575.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,179.72 : 330,316.74 = 68,373.66 : x
  2. Step 2: Convert to fraction form
    220,179.72/330,316.74 = 68,373.66/x
  3. Step 3: Cross multiply
    220,179.72x = 330,316.74 × 68,373.66
  4. Step 4: Simplify right side
    220,179.72x = 22,584,964,473.07
  5. Step 5: Solve for x
    x = 22,584,964,473.07/220,179.72
  6. Step 6: Final answer
    x = 102,575.13

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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.