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Finding the Fourth Proportional to 319,486.29, 479,049.62 and 106,139.99

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Solution

The fourth proportional to 319,486.29, 479,049.62 and 106,139.99 is: 159,150.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,486.29 : 479,049.62 = 106,139.99 : x
  2. Step 2: Convert to fraction form
    319,486.29/479,049.62 = 106,139.99/x
  3. Step 3: Cross multiply
    319,486.29x = 479,049.62 × 106,139.99
  4. Step 4: Simplify right side
    319,486.29x = 50,846,318,950.36
  5. Step 5: Solve for x
    x = 50,846,318,950.36/319,486.29
  6. Step 6: Final answer
    x = 159,150.24

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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.