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Finding the Fourth Proportional to 215,711.52, 323,568 and 65,951.22

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Solution

The fourth proportional to 215,711.52, 323,568 and 65,951.22 is: 98,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,711.52 : 323,568 = 65,951.22 : x
  2. Step 2: Convert to fraction form
    215,711.52/323,568 = 65,951.22/x
  3. Step 3: Cross multiply
    215,711.52x = 323,568 × 65,951.22
  4. Step 4: Simplify right side
    215,711.52x = 21,339,704,352.96
  5. Step 5: Solve for x
    x = 21,339,704,352.96/215,711.52
  6. Step 6: Final answer
    x = 98,927.05

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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.