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Finding the Fourth Proportional to 319,651.36, 479,560.08 and 262,818.96

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Solution

The fourth proportional to 319,651.36, 479,560.08 and 262,818.96 is: 394,296.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,651.36 : 479,560.08 = 262,818.96 : x
  2. Step 2: Convert to fraction form
    319,651.36/479,560.08 = 262,818.96/x
  3. Step 3: Cross multiply
    319,651.36x = 479,560.08 × 262,818.96
  4. Step 4: Simplify right side
    319,651.36x = 126,037,481,483.12
  5. Step 5: Solve for x
    x = 126,037,481,483.12/319,651.36
  6. Step 6: Final answer
    x = 394,296.72

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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.