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Finding the Fourth Proportional to 319,636.78, 479,330.52 and 119,848.30

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Solution

The fourth proportional to 319,636.78, 479,330.52 and 119,848.30 is: 179,725.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,636.78 : 479,330.52 = 119,848.30 : x
  2. Step 2: Convert to fraction form
    319,636.78/479,330.52 = 119,848.30/x
  3. Step 3: Cross multiply
    319,636.78x = 479,330.52 × 119,848.30
  4. Step 4: Simplify right side
    319,636.78x = 57,446,947,960.12
  5. Step 5: Solve for x
    x = 57,446,947,960.12/319,636.78
  6. Step 6: Final answer
    x = 179,725.71

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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.