Home / 378,195.12-521,902.22-206,114.40

Finding the Fourth Proportional to 378,195.12, 521,902.22 and 206,114.40

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Solution

The fourth proportional to 378,195.12, 521,902.22 and 206,114.40 is: 284,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,195.12 : 521,902.22 = 206,114.40 : x
  2. Step 2: Convert to fraction form
    378,195.12/521,902.22 = 206,114.40/x
  3. Step 3: Cross multiply
    378,195.12x = 521,902.22 × 206,114.40
  4. Step 4: Simplify right side
    378,195.12x = 107,571,561,903.40
  5. Step 5: Solve for x
    x = 107,571,561,903.40/378,195.12
  6. Step 6: Final answer
    x = 284,434.03

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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.