Home / 378,486.18-522,287.04-217,227.72

Finding the Fourth Proportional to 378,486.18, 522,287.04 and 217,227.72

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Solution

The fourth proportional to 378,486.18, 522,287.04 and 217,227.72 is: 299,760.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,486.18 : 522,287.04 = 217,227.72 : x
  2. Step 2: Convert to fraction form
    378,486.18/522,287.04 = 217,227.72/x
  3. Step 3: Cross multiply
    378,486.18x = 522,287.04 × 217,227.72
  4. Step 4: Simplify right side
    378,486.18x = 113,455,222,884.75
  5. Step 5: Solve for x
    x = 113,455,222,884.75/378,486.18
  6. Step 6: Final answer
    x = 299,760.54

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1.5x scale

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.