Home / 378,220.59-521,944.56-206,138.61

Finding the Fourth Proportional to 378,220.59, 521,944.56 and 206,138.61

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Solution

The fourth proportional to 378,220.59, 521,944.56 and 206,138.61 is: 284,471.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,220.59 : 521,944.56 = 206,138.61 : x
  2. Step 2: Convert to fraction form
    378,220.59/521,944.56 = 206,138.61/x
  3. Step 3: Cross multiply
    378,220.59x = 521,944.56 × 206,138.61
  4. Step 4: Simplify right side
    378,220.59x = 107,592,926,095.46
  5. Step 5: Solve for x
    x = 107,592,926,095.46/378,220.59
  6. Step 6: Final answer
    x = 284,471.36

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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.