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Finding the Fourth Proportional to 384,311.80, 576,467.70 and 272,118.70

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Solution

The fourth proportional to 384,311.80, 576,467.70 and 272,118.70 is: 408,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,311.80 : 576,467.70 = 272,118.70 : x
  2. Step 2: Convert to fraction form
    384,311.80/576,467.70 = 272,118.70/x
  3. Step 3: Cross multiply
    384,311.80x = 576,467.70 × 272,118.70
  4. Step 4: Simplify right side
    384,311.80x = 156,867,641,115.99
  5. Step 5: Solve for x
    x = 156,867,641,115.99/384,311.80
  6. Step 6: Final answer
    x = 408,178.05

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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.