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Finding the Fourth Proportional to 208,183.59, 287,293.37 and 112,691.07

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Solution

The fourth proportional to 208,183.59, 287,293.37 and 112,691.07 is: 155,513.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,183.59 : 287,293.37 = 112,691.07 : x
  2. Step 2: Convert to fraction form
    208,183.59/287,293.37 = 112,691.07/x
  3. Step 3: Cross multiply
    208,183.59x = 287,293.37 × 112,691.07
  4. Step 4: Simplify right side
    208,183.59x = 32,375,396,705.75
  5. Step 5: Solve for x
    x = 32,375,396,705.75/208,183.59
  6. Step 6: Final answer
    x = 155,513.68

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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.