Home / 215,918.72-323,924.16-75,685.76

Finding the Fourth Proportional to 215,918.72, 323,924.16 and 75,685.76

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Solution

The fourth proportional to 215,918.72, 323,924.16 and 75,685.76 is: 113,544.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,918.72 : 323,924.16 = 75,685.76 : x
  2. Step 2: Convert to fraction form
    215,918.72/323,924.16 = 75,685.76/x
  3. Step 3: Cross multiply
    215,918.72x = 323,924.16 × 75,685.76
  4. Step 4: Simplify right side
    215,918.72x = 24,516,446,231.96
  5. Step 5: Solve for x
    x = 24,516,446,231.96/215,918.72
  6. Step 6: Final answer
    x = 113,544.79

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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.