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Finding the Fourth Proportional to 383,179.87, 528,804.57 and 213,414.01

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Solution

The fourth proportional to 383,179.87, 528,804.57 and 213,414.01 is: 294,520.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,179.87 : 528,804.57 = 213,414.01 : x
  2. Step 2: Convert to fraction form
    383,179.87/528,804.57 = 213,414.01/x
  3. Step 3: Cross multiply
    383,179.87x = 528,804.57 × 213,414.01
  4. Step 4: Simplify right side
    383,179.87x = 112,854,303,790.03
  5. Step 5: Solve for x
    x = 112,854,303,790.03/383,179.87
  6. Step 6: Final answer
    x = 294,520.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.