Home / 378,155.29-521,847.60-206,074.79

Finding the Fourth Proportional to 378,155.29, 521,847.60 and 206,074.79

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Solution

The fourth proportional to 378,155.29, 521,847.60 and 206,074.79 is: 284,379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,155.29 : 521,847.60 = 206,074.79 : x
  2. Step 2: Convert to fraction form
    378,155.29/521,847.60 = 206,074.79/x
  3. Step 3: Cross multiply
    378,155.29x = 521,847.60 × 206,074.79
  4. Step 4: Simplify right side
    378,155.29x = 107,539,634,582.00
  5. Step 5: Solve for x
    x = 107,539,634,582.00/378,155.29
  6. Step 6: Final answer
    x = 284,379.56

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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.