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Finding the Fourth Proportional to 319,906.25, 479,858 and 130,324.33

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Solution

The fourth proportional to 319,906.25, 479,858 and 130,324.33 is: 195,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,906.25 : 479,858 = 130,324.33 : x
  2. Step 2: Convert to fraction form
    319,906.25/479,858 = 130,324.33/x
  3. Step 3: Cross multiply
    319,906.25x = 479,858 × 130,324.33
  4. Step 4: Simplify right side
    319,906.25x = 62,537,169,945.85
  5. Step 5: Solve for x
    x = 62,537,169,945.85/319,906.25
  6. Step 6: Final answer
    x = 195,485.93

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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.