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Finding the Fourth Proportional to 212,922.82, 319,450.84 and 63,163.90

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Solution

The fourth proportional to 212,922.82, 319,450.84 and 63,163.90 is: 94,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,922.82 : 319,450.84 = 63,163.90 : x
  2. Step 2: Convert to fraction form
    212,922.82/319,450.84 = 63,163.90/x
  3. Step 3: Cross multiply
    212,922.82x = 319,450.84 × 63,163.90
  4. Step 4: Simplify right side
    212,922.82x = 20,177,759,956.14
  5. Step 5: Solve for x
    x = 20,177,759,956.14/212,922.82
  6. Step 6: Final answer
    x = 94,765.60

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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.