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Finding the Fourth Proportional to 576,143.20, 863,480.40 and 323,423.20

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Solution

The fourth proportional to 576,143.20, 863,480.40 and 323,423.20 is: 484,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,143.20 : 863,480.40 = 323,423.20 : x
  2. Step 2: Convert to fraction form
    576,143.20/863,480.40 = 323,423.20/x
  3. Step 3: Cross multiply
    576,143.20x = 863,480.40 × 323,423.20
  4. Step 4: Simplify right side
    576,143.20x = 279,269,594,105.28
  5. Step 5: Solve for x
    x = 279,269,594,105.28/576,143.20
  6. Step 6: Final answer
    x = 484,722.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.