Home / 319,166.31-478,765.89-82,511.04

Finding the Fourth Proportional to 319,166.31, 478,765.89 and 82,511.04

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Solution

The fourth proportional to 319,166.31, 478,765.89 and 82,511.04 is: 123,770.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,166.31 : 478,765.89 = 82,511.04 : x
  2. Step 2: Convert to fraction form
    319,166.31/478,765.89 = 82,511.04/x
  3. Step 3: Cross multiply
    319,166.31x = 478,765.89 × 82,511.04
  4. Step 4: Simplify right side
    319,166.31x = 39,503,471,500.43
  5. Step 5: Solve for x
    x = 39,503,471,500.43/319,166.31
  6. Step 6: Final answer
    x = 123,770.81

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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.