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Finding the Fourth Proportional to 215,500.50, 323,250.75 and 67,756.50

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Solution

The fourth proportional to 215,500.50, 323,250.75 and 67,756.50 is: 101,634.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,500.50 : 323,250.75 = 67,756.50 : x
  2. Step 2: Convert to fraction form
    215,500.50/323,250.75 = 67,756.50/x
  3. Step 3: Cross multiply
    215,500.50x = 323,250.75 × 67,756.50
  4. Step 4: Simplify right side
    215,500.50x = 21,902,339,442.38
  5. Step 5: Solve for x
    x = 21,902,339,442.38/215,500.50
  6. Step 6: Final answer
    x = 101,634.75

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1.5x scale

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.