Home / 378,947.32-522,948.24-206,865.40

Finding the Fourth Proportional to 378,947.32, 522,948.24 and 206,865.40

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Solution

The fourth proportional to 378,947.32, 522,948.24 and 206,865.40 is: 285,474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,947.32 : 522,948.24 = 206,865.40 : x
  2. Step 2: Convert to fraction form
    378,947.32/522,948.24 = 206,865.40/x
  3. Step 3: Cross multiply
    378,947.32x = 522,948.24 × 206,865.40
  4. Step 4: Simplify right side
    378,947.32x = 108,179,895,586.59
  5. Step 5: Solve for x
    x = 108,179,895,586.59/378,947.32
  6. Step 6: Final answer
    x = 285,474.76

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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.