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Finding the Fourth Proportional to 215,366.80, 323,072.88 and 75,126.64

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Solution

The fourth proportional to 215,366.80, 323,072.88 and 75,126.64 is: 112,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,366.80 : 323,072.88 = 75,126.64 : x
  2. Step 2: Convert to fraction form
    215,366.80/323,072.88 = 75,126.64/x
  3. Step 3: Cross multiply
    215,366.80x = 323,072.88 × 75,126.64
  4. Step 4: Simplify right side
    215,366.80x = 24,271,379,949.52
  5. Step 5: Solve for x
    x = 24,271,379,949.52/215,366.80
  6. Step 6: Final answer
    x = 112,697.87

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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.