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Finding the Fourth Proportional to 400,882.57, 553,199.83 and 239,826.42

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Solution

The fourth proportional to 400,882.57, 553,199.83 and 239,826.42 is: 330,949.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,882.57 : 553,199.83 = 239,826.42 : x
  2. Step 2: Convert to fraction form
    400,882.57/553,199.83 = 239,826.42/x
  3. Step 3: Cross multiply
    400,882.57x = 553,199.83 × 239,826.42
  4. Step 4: Simplify right side
    400,882.57x = 132,671,934,173.94
  5. Step 5: Solve for x
    x = 132,671,934,173.94/400,882.57
  6. Step 6: Final answer
    x = 330,949.62

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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.