Home / 381,898.19-527,028.32-209,826.91

Finding the Fourth Proportional to 381,898.19, 527,028.32 and 209,826.91

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Solution

The fourth proportional to 381,898.19, 527,028.32 and 209,826.91 is: 289,565.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,898.19 : 527,028.32 = 209,826.91 : x
  2. Step 2: Convert to fraction form
    381,898.19/527,028.32 = 209,826.91/x
  3. Step 3: Cross multiply
    381,898.19x = 527,028.32 × 209,826.91
  4. Step 4: Simplify right side
    381,898.19x = 110,584,722,086.91
  5. Step 5: Solve for x
    x = 110,584,722,086.91/381,898.19
  6. Step 6: Final answer
    x = 289,565.97

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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.