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Finding the Fourth Proportional to 212,611.84, 318,736.68 and 94,218.64

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Solution

The fourth proportional to 212,611.84, 318,736.68 and 94,218.64 is: 141,247.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,611.84 : 318,736.68 = 94,218.64 : x
  2. Step 2: Convert to fraction form
    212,611.84/318,736.68 = 94,218.64/x
  3. Step 3: Cross multiply
    212,611.84x = 318,736.68 × 94,218.64
  4. Step 4: Simplify right side
    212,611.84x = 30,030,936,507.72
  5. Step 5: Solve for x
    x = 30,030,936,507.72/212,611.84
  6. Step 6: Final answer
    x = 141,247.71

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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.