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Finding the Fourth Proportional to 319,609.78, 479,290.06 and 119,821.26

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Solution

The fourth proportional to 319,609.78, 479,290.06 and 119,821.26 is: 179,685.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,609.78 : 479,290.06 = 119,821.26 : x
  2. Step 2: Convert to fraction form
    319,609.78/479,290.06 = 119,821.26/x
  3. Step 3: Cross multiply
    319,609.78x = 479,290.06 × 119,821.26
  4. Step 4: Simplify right side
    319,609.78x = 57,429,138,894.68
  5. Step 5: Solve for x
    x = 57,429,138,894.68/319,609.78
  6. Step 6: Final answer
    x = 179,685.17

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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.