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Finding the Fourth Proportional to 217,072.80, 325,455.60 and 83,901.60

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Solution

The fourth proportional to 217,072.80, 325,455.60 and 83,901.60 is: 125,793.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,072.80 : 325,455.60 = 83,901.60 : x
  2. Step 2: Convert to fraction form
    217,072.80/325,455.60 = 83,901.60/x
  3. Step 3: Cross multiply
    217,072.80x = 325,455.60 × 83,901.60
  4. Step 4: Simplify right side
    217,072.80x = 27,306,245,568.96
  5. Step 5: Solve for x
    x = 27,306,245,568.96/217,072.80
  6. Step 6: Final answer
    x = 125,793.03

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1.5x scale

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.