Home / 215,218.64-322,815.47-82,112.33

Finding the Fourth Proportional to 215,218.64, 322,815.47 and 82,112.33

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Solution

The fourth proportional to 215,218.64, 322,815.47 and 82,112.33 is: 123,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,218.64 : 322,815.47 = 82,112.33 : x
  2. Step 2: Convert to fraction form
    215,218.64/322,815.47 = 82,112.33/x
  3. Step 3: Cross multiply
    215,218.64x = 322,815.47 × 82,112.33
  4. Step 4: Simplify right side
    215,218.64x = 26,507,128,377.11
  5. Step 5: Solve for x
    x = 26,507,128,377.11/215,218.64
  6. Step 6: Final answer
    x = 123,163.72

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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.