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Finding the Fourth Proportional to 188,010.78, 280,694.96 and 143,399.58

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Solution

The fourth proportional to 188,010.78, 280,694.96 and 143,399.58 is: 214,091.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,010.78 : 280,694.96 = 143,399.58 : x
  2. Step 2: Convert to fraction form
    188,010.78/280,694.96 = 143,399.58/x
  3. Step 3: Cross multiply
    188,010.78x = 280,694.96 × 143,399.58
  4. Step 4: Simplify right side
    188,010.78x = 40,251,538,655.12
  5. Step 5: Solve for x
    x = 40,251,538,655.12/188,010.78
  6. Step 6: Final answer
    x = 214,091.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.