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Finding the Fourth Proportional to 287,405.97, 396,627.39 and 160,083.69

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Solution

The fourth proportional to 287,405.97, 396,627.39 and 160,083.69 is: 220,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,405.97 : 396,627.39 = 160,083.69 : x
  2. Step 2: Convert to fraction form
    287,405.97/396,627.39 = 160,083.69/x
  3. Step 3: Cross multiply
    287,405.97x = 396,627.39 × 160,083.69
  4. Step 4: Simplify right side
    287,405.97x = 63,493,576,146.27
  5. Step 5: Solve for x
    x = 63,493,576,146.27/287,405.97
  6. Step 6: Final answer
    x = 220,919.48

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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.