Home / 386,961.47-580,481.09-143,867.51

Finding the Fourth Proportional to 386,961.47, 580,481.09 and 143,867.51

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Solution

The fourth proportional to 386,961.47, 580,481.09 and 143,867.51 is: 215,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,961.47 : 580,481.09 = 143,867.51 : x
  2. Step 2: Convert to fraction form
    386,961.47/580,481.09 = 143,867.51/x
  3. Step 3: Cross multiply
    386,961.47x = 580,481.09 × 143,867.51
  4. Step 4: Simplify right side
    386,961.47x = 83,512,368,301.05
  5. Step 5: Solve for x
    x = 83,512,368,301.05/386,961.47
  6. Step 6: Final answer
    x = 215,815.72

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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.