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Finding the Fourth Proportional to 319,610.78, 479,291.57 and 119,822.26

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Solution

The fourth proportional to 319,610.78, 479,291.57 and 119,822.26 is: 179,686.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,610.78 : 479,291.57 = 119,822.26 : x
  2. Step 2: Convert to fraction form
    319,610.78/479,291.57 = 119,822.26/x
  3. Step 3: Cross multiply
    319,610.78x = 479,291.57 × 119,822.26
  4. Step 4: Simplify right side
    319,610.78x = 57,429,796,120.78
  5. Step 5: Solve for x
    x = 57,429,796,120.78/319,610.78
  6. Step 6: Final answer
    x = 179,686.67

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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.