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Finding the Fourth Proportional to 208,286.28, 287,435.22 and 112,793.08

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Solution

The fourth proportional to 208,286.28, 287,435.22 and 112,793.08 is: 155,654.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,286.28 : 287,435.22 = 112,793.08 : x
  2. Step 2: Convert to fraction form
    208,286.28/287,435.22 = 112,793.08/x
  3. Step 3: Cross multiply
    208,286.28x = 287,435.22 × 112,793.08
  4. Step 4: Simplify right side
    208,286.28x = 32,420,703,764.28
  5. Step 5: Solve for x
    x = 32,420,703,764.28/208,286.28
  6. Step 6: Final answer
    x = 155,654.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.