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Finding the Fourth Proportional to 319,607.78, 479,287.07 and 119,819.26

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Solution

The fourth proportional to 319,607.78, 479,287.07 and 119,819.26 is: 179,682.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,607.78 : 479,287.07 = 119,819.26 : x
  2. Step 2: Convert to fraction form
    319,607.78/479,287.07 = 119,819.26/x
  3. Step 3: Cross multiply
    319,607.78x = 479,287.07 × 119,819.26
  4. Step 4: Simplify right side
    319,607.78x = 57,427,819,059.44
  5. Step 5: Solve for x
    x = 57,427,819,059.44/319,607.78
  6. Step 6: Final answer
    x = 179,682.17

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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.