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Finding the Fourth Proportional to 227,134.91, 311,175.93 and 218,621.94

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Solution

The fourth proportional to 227,134.91, 311,175.93 and 218,621.94 is: 299,513.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,134.91 : 311,175.93 = 218,621.94 : x
  2. Step 2: Convert to fraction form
    227,134.91/311,175.93 = 218,621.94/x
  3. Step 3: Cross multiply
    227,134.91x = 311,175.93 × 218,621.94
  4. Step 4: Simplify right side
    227,134.91x = 68,029,885,497.90
  5. Step 5: Solve for x
    x = 68,029,885,497.90/227,134.91
  6. Step 6: Final answer
    x = 299,513.13

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.