Home / 378,204.12-521,914.62-206,123.40

Finding the Fourth Proportional to 378,204.12, 521,914.62 and 206,123.40

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Solution

The fourth proportional to 378,204.12, 521,914.62 and 206,123.40 is: 284,446.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,204.12 : 521,914.62 = 206,123.40 : x
  2. Step 2: Convert to fraction form
    378,204.12/521,914.62 = 206,123.40/x
  3. Step 3: Cross multiply
    378,204.12x = 521,914.62 × 206,123.40
  4. Step 4: Simplify right side
    378,204.12x = 107,578,815,984.11
  5. Step 5: Solve for x
    x = 107,578,815,984.11/378,204.12
  6. Step 6: Final answer
    x = 284,446.44

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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.