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Finding the Fourth Proportional to 323,672.90, 485,491.79 and 99,033.36

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Solution

The fourth proportional to 323,672.90, 485,491.79 and 99,033.36 is: 148,544.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,672.90 : 485,491.79 = 99,033.36 : x
  2. Step 2: Convert to fraction form
    323,672.90/485,491.79 = 99,033.36/x
  3. Step 3: Cross multiply
    323,672.90x = 485,491.79 × 99,033.36
  4. Step 4: Simplify right side
    323,672.90x = 48,079,882,720.95
  5. Step 5: Solve for x
    x = 48,079,882,720.95/323,672.90
  6. Step 6: Final answer
    x = 148,544.67

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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.