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Finding the Fourth Proportional to 319,402.68, 479,103.96 and 82,745.37

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Solution

The fourth proportional to 319,402.68, 479,103.96 and 82,745.37 is: 124,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,402.68 : 479,103.96 = 82,745.37 : x
  2. Step 2: Convert to fraction form
    319,402.68/479,103.96 = 82,745.37/x
  3. Step 3: Cross multiply
    319,402.68x = 479,103.96 × 82,745.37
  4. Step 4: Simplify right side
    319,402.68x = 39,643,634,438.67
  5. Step 5: Solve for x
    x = 39,643,634,438.67/319,402.68
  6. Step 6: Final answer
    x = 124,118.04

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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.