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Finding the Fourth Proportional to 319,613.78, 479,296.02 and 119,825.30

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Solution

The fourth proportional to 319,613.78, 479,296.02 and 119,825.30 is: 179,691.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,613.78 : 479,296.02 = 119,825.30 : x
  2. Step 2: Convert to fraction form
    319,613.78/479,296.02 = 119,825.30/x
  3. Step 3: Cross multiply
    319,613.78x = 479,296.02 × 119,825.30
  4. Step 4: Simplify right side
    319,613.78x = 57,431,789,385.31
  5. Step 5: Solve for x
    x = 57,431,789,385.31/319,613.78
  6. Step 6: Final answer
    x = 179,691.22

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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.