Home / 319,427.58-479,037.70-106,138.21

Finding the Fourth Proportional to 319,427.58, 479,037.70 and 106,138.21

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Solution

The fourth proportional to 319,427.58, 479,037.70 and 106,138.21 is: 159,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,427.58 : 479,037.70 = 106,138.21 : x
  2. Step 2: Convert to fraction form
    319,427.58/479,037.70 = 106,138.21/x
  3. Step 3: Cross multiply
    319,427.58x = 479,037.70 × 106,138.21
  4. Step 4: Simplify right side
    319,427.58x = 50,844,204,000.52
  5. Step 5: Solve for x
    x = 50,844,204,000.52/319,427.58
  6. Step 6: Final answer
    x = 159,172.87

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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.