Home / 319,428.58-479,039.20-106,139.21

Finding the Fourth Proportional to 319,428.58, 479,039.20 and 106,139.21

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Solution

The fourth proportional to 319,428.58, 479,039.20 and 106,139.21 is: 159,174.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,428.58 : 479,039.20 = 106,139.21 : x
  2. Step 2: Convert to fraction form
    319,428.58/479,039.20 = 106,139.21/x
  3. Step 3: Cross multiply
    319,428.58x = 479,039.20 × 106,139.21
  4. Step 4: Simplify right side
    319,428.58x = 50,844,842,247.03
  5. Step 5: Solve for x
    x = 50,844,842,247.03/319,428.58
  6. Step 6: Final answer
    x = 159,174.37

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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.