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Finding the Fourth Proportional to 319,610.78, 479,291.55 and 119,822.27

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Solution

The fourth proportional to 319,610.78, 479,291.55 and 119,822.27 is: 179,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,610.78 : 479,291.55 = 119,822.27 : x
  2. Step 2: Convert to fraction form
    319,610.78/479,291.55 = 119,822.27/x
  3. Step 3: Cross multiply
    319,610.78x = 479,291.55 × 119,822.27
  4. Step 4: Simplify right side
    319,610.78x = 57,429,801,512.82
  5. Step 5: Solve for x
    x = 57,429,801,512.82/319,610.78
  6. Step 6: Final answer
    x = 179,686.68

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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.