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Finding the Fourth Proportional to 264,688.66, 396,991.17 and 219,996.94

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Solution

The fourth proportional to 264,688.66, 396,991.17 and 219,996.94 is: 329,960.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,688.66 : 396,991.17 = 219,996.94 : x
  2. Step 2: Convert to fraction form
    264,688.66/396,991.17 = 219,996.94/x
  3. Step 3: Cross multiply
    264,688.66x = 396,991.17 × 219,996.94
  4. Step 4: Simplify right side
    264,688.66x = 87,336,842,607.02
  5. Step 5: Solve for x
    x = 87,336,842,607.02/264,688.66
  6. Step 6: Final answer
    x = 329,960.65

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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.