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Finding the Fourth Proportional to 217,768.80, 326,815.20 and 112,533.60

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Solution

The fourth proportional to 217,768.80, 326,815.20 and 112,533.60 is: 168,884.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,768.80 : 326,815.20 = 112,533.60 : x
  2. Step 2: Convert to fraction form
    217,768.80/326,815.20 = 112,533.60/x
  3. Step 3: Cross multiply
    217,768.80x = 326,815.20 × 112,533.60
  4. Step 4: Simplify right side
    217,768.80x = 36,777,690,990.72
  5. Step 5: Solve for x
    x = 36,777,690,990.72/217,768.80
  6. Step 6: Final answer
    x = 168,884.11

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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.