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Finding the Fourth Proportional to 378,889.32, 522,859.27 and 206,801.58

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Solution

The fourth proportional to 378,889.32, 522,859.27 and 206,801.58 is: 285,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,889.32 : 522,859.27 = 206,801.58 : x
  2. Step 2: Convert to fraction form
    378,889.32/522,859.27 = 206,801.58/x
  3. Step 3: Cross multiply
    378,889.32x = 522,859.27 × 206,801.58
  4. Step 4: Simplify right side
    378,889.32x = 108,128,123,153.65
  5. Step 5: Solve for x
    x = 108,128,123,153.65/378,889.32
  6. Step 6: Final answer
    x = 285,381.82

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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.