Home / 378,188.31-521,899.95-206,106.32

Finding the Fourth Proportional to 378,188.31, 521,899.95 and 206,106.32

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Solution

The fourth proportional to 378,188.31, 521,899.95 and 206,106.32 is: 284,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,188.31 : 521,899.95 = 206,106.32 : x
  2. Step 2: Convert to fraction form
    378,188.31/521,899.95 = 206,106.32/x
  3. Step 3: Cross multiply
    378,188.31x = 521,899.95 × 206,106.32
  4. Step 4: Simplify right side
    378,188.31x = 107,566,875,493.18
  5. Step 5: Solve for x
    x = 107,566,875,493.18/378,188.31
  6. Step 6: Final answer
    x = 284,426.76

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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.