Home / 378,926.83-522,923.30-209,160.91

Finding the Fourth Proportional to 378,926.83, 522,923.30 and 209,160.91

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Solution

The fourth proportional to 378,926.83, 522,923.30 and 209,160.91 is: 288,644.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,926.83 : 522,923.30 = 209,160.91 : x
  2. Step 2: Convert to fraction form
    378,926.83/522,923.30 = 209,160.91/x
  3. Step 3: Cross multiply
    378,926.83x = 522,923.30 × 209,160.91
  4. Step 4: Simplify right side
    378,926.83x = 109,375,113,288.20
  5. Step 5: Solve for x
    x = 109,375,113,288.20/378,926.83
  6. Step 6: Final answer
    x = 288,644.42

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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.