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Finding the Fourth Proportional to 201,719.21, 302,491.32 and 68,563.71

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Solution

The fourth proportional to 201,719.21, 302,491.32 and 68,563.71 is: 102,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,719.21 : 302,491.32 = 68,563.71 : x
  2. Step 2: Convert to fraction form
    201,719.21/302,491.32 = 68,563.71/x
  3. Step 3: Cross multiply
    201,719.21x = 302,491.32 × 68,563.71
  4. Step 4: Simplify right side
    201,719.21x = 20,739,927,142.00
  5. Step 5: Solve for x
    x = 20,739,927,142.00/201,719.21
  6. Step 6: Final answer
    x = 102,815.83

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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.