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Finding the Fourth Proportional to 383,694.72, 529,513.92 and 213,959.04

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Solution

The fourth proportional to 383,694.72, 529,513.92 and 213,959.04 is: 295,271.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,694.72 : 529,513.92 = 213,959.04 : x
  2. Step 2: Convert to fraction form
    383,694.72/529,513.92 = 213,959.04/x
  3. Step 3: Cross multiply
    383,694.72x = 529,513.92 × 213,959.04
  4. Step 4: Simplify right side
    383,694.72x = 113,294,289,989.84
  5. Step 5: Solve for x
    x = 113,294,289,989.84/383,694.72
  6. Step 6: Final answer
    x = 295,271.95

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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.