Home / 312,120.20-430,610.62-204,836

Finding the Fourth Proportional to 312,120.20, 430,610.62 and 204,836

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Solution

The fourth proportional to 312,120.20, 430,610.62 and 204,836 is: 282,598.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,120.20 : 430,610.62 = 204,836 : x
  2. Step 2: Convert to fraction form
    312,120.20/430,610.62 = 204,836/x
  3. Step 3: Cross multiply
    312,120.20x = 430,610.62 × 204,836
  4. Step 4: Simplify right side
    312,120.20x = 88,204,556,958.32
  5. Step 5: Solve for x
    x = 88,204,556,958.32/312,120.20
  6. Step 6: Final answer
    x = 282,598.04

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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.