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Finding the Fourth Proportional to 212,771.88, 318,759.30 and 190,863

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Solution

The fourth proportional to 212,771.88, 318,759.30 and 190,863 is: 285,937.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,771.88 : 318,759.30 = 190,863 : x
  2. Step 2: Convert to fraction form
    212,771.88/318,759.30 = 190,863/x
  3. Step 3: Cross multiply
    212,771.88x = 318,759.30 × 190,863
  4. Step 4: Simplify right side
    212,771.88x = 60,839,356,275.90
  5. Step 5: Solve for x
    x = 60,839,356,275.90/212,771.88
  6. Step 6: Final answer
    x = 285,937.02

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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.