Home / 215,918.28-297,967.68-120,422.52

Finding the Fourth Proportional to 215,918.28, 297,967.68 and 120,422.52

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Solution

The fourth proportional to 215,918.28, 297,967.68 and 120,422.52 is: 166,183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,918.28 : 297,967.68 = 120,422.52 : x
  2. Step 2: Convert to fraction form
    215,918.28/297,967.68 = 120,422.52/x
  3. Step 3: Cross multiply
    215,918.28x = 297,967.68 × 120,422.52
  4. Step 4: Simplify right side
    215,918.28x = 35,882,018,904.15
  5. Step 5: Solve for x
    x = 35,882,018,904.15/215,918.28
  6. Step 6: Final answer
    x = 166,183.33

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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.