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Finding the Fourth Proportional to 215,784, 323,676 and 68,040

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Solution

The fourth proportional to 215,784, 323,676 and 68,040 is: 102,060

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784 : 323,676 = 68,040 : x
  2. Step 2: Convert to fraction form
    215,784/323,676 = 68,040/x
  3. Step 3: Cross multiply
    215,784x = 323,676 × 68,040
  4. Step 4: Simplify right side
    215,784x = 22,022,915,040
  5. Step 5: Solve for x
    x = 22,022,915,040/215,784
  6. Step 6: Final answer
    x = 102,060

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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.