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Finding the Fourth Proportional to 212,491.20, 318,589.20 and 94,098

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Solution

The fourth proportional to 212,491.20, 318,589.20 and 94,098 is: 141,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,491.20 : 318,589.20 = 94,098 : x
  2. Step 2: Convert to fraction form
    212,491.20/318,589.20 = 94,098/x
  3. Step 3: Cross multiply
    212,491.20x = 318,589.20 × 94,098
  4. Step 4: Simplify right side
    212,491.20x = 29,978,606,541.60
  5. Step 5: Solve for x
    x = 29,978,606,541.60/212,491.20
  6. Step 6: Final answer
    x = 141,081.64

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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.