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Finding the Fourth Proportional to 481,479.46, 664,656.24 and 318,234.29

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Solution

The fourth proportional to 481,479.46, 664,656.24 and 318,234.29 is: 439,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,479.46 : 664,656.24 = 318,234.29 : x
  2. Step 2: Convert to fraction form
    481,479.46/664,656.24 = 318,234.29/x
  3. Step 3: Cross multiply
    481,479.46x = 664,656.24 × 318,234.29
  4. Step 4: Simplify right side
    481,479.46x = 211,516,406,630.47
  5. Step 5: Solve for x
    x = 211,516,406,630.47/481,479.46
  6. Step 6: Final answer
    x = 439,305.15

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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.