Home / 378,970.10-522,986.65-206,895.32

Finding the Fourth Proportional to 378,970.10, 522,986.65 and 206,895.32

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Solution

The fourth proportional to 378,970.10, 522,986.65 and 206,895.32 is: 285,519.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,970.10 : 522,986.65 = 206,895.32 : x
  2. Step 2: Convert to fraction form
    378,970.10/522,986.65 = 206,895.32/x
  3. Step 3: Cross multiply
    378,970.10x = 522,986.65 × 206,895.32
  4. Step 4: Simplify right side
    378,970.10x = 108,203,487,951.16
  5. Step 5: Solve for x
    x = 108,203,487,951.16/378,970.10
  6. Step 6: Final answer
    x = 285,519.86

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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.