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Finding the Fourth Proportional to 188,568.88, 283,039.20 and 138,508.44

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Solution

The fourth proportional to 188,568.88, 283,039.20 and 138,508.44 is: 207,899.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,568.88 : 283,039.20 = 138,508.44 : x
  2. Step 2: Convert to fraction form
    188,568.88/283,039.20 = 138,508.44/x
  3. Step 3: Cross multiply
    188,568.88x = 283,039.20 × 138,508.44
  4. Step 4: Simplify right side
    188,568.88x = 39,203,318,050.85
  5. Step 5: Solve for x
    x = 39,203,318,050.85/188,568.88
  6. Step 6: Final answer
    x = 207,899.19

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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.