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Finding the Fourth Proportional to 319,640.34, 479,335.89 and 119,851.62

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Solution

The fourth proportional to 319,640.34, 479,335.89 and 119,851.62 is: 179,730.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,640.34 : 479,335.89 = 119,851.62 : x
  2. Step 2: Convert to fraction form
    319,640.34/479,335.89 = 119,851.62/x
  3. Step 3: Cross multiply
    319,640.34x = 479,335.89 × 119,851.62
  4. Step 4: Simplify right side
    319,640.34x = 57,449,182,940.64
  5. Step 5: Solve for x
    x = 57,449,182,940.64/319,640.34
  6. Step 6: Final answer
    x = 179,730.70

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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.