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Finding the Fourth Proportional to 220,641.08, 330,670.76 and 87,448.73

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Solution

The fourth proportional to 220,641.08, 330,670.76 and 87,448.73 is: 131,057.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,641.08 : 330,670.76 = 87,448.73 : x
  2. Step 2: Convert to fraction form
    220,641.08/330,670.76 = 87,448.73/x
  3. Step 3: Cross multiply
    220,641.08x = 330,670.76 × 87,448.73
  4. Step 4: Simplify right side
    220,641.08x = 28,916,735,919.54
  5. Step 5: Solve for x
    x = 28,916,735,919.54/220,641.08
  6. Step 6: Final answer
    x = 131,057.81

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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.