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Finding the Fourth Proportional to 220,531.92, 330,853.32 and 70,785.60

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Solution

The fourth proportional to 220,531.92, 330,853.32 and 70,785.60 is: 106,196.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,531.92 : 330,853.32 = 70,785.60 : x
  2. Step 2: Convert to fraction form
    220,531.92/330,853.32 = 70,785.60/x
  3. Step 3: Cross multiply
    220,531.92x = 330,853.32 × 70,785.60
  4. Step 4: Simplify right side
    220,531.92x = 23,419,650,768.19
  5. Step 5: Solve for x
    x = 23,419,650,768.19/220,531.92
  6. Step 6: Final answer
    x = 106,196.19

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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.