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Finding the Fourth Proportional to 384,467.20, 576,009.60 and 313,964.80

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Solution

The fourth proportional to 384,467.20, 576,009.60 and 313,964.80 is: 470,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,467.20 : 576,009.60 = 313,964.80 : x
  2. Step 2: Convert to fraction form
    384,467.20/576,009.60 = 313,964.80/x
  3. Step 3: Cross multiply
    384,467.20x = 576,009.60 × 313,964.80
  4. Step 4: Simplify right side
    384,467.20x = 180,846,738,862.08
  5. Step 5: Solve for x
    x = 180,846,738,862.08/384,467.20
  6. Step 6: Final answer
    x = 470,382.75

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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.