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Finding the Fourth Proportional to 227,134.90, 311,175.93 and 218,621.93

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Solution

The fourth proportional to 227,134.90, 311,175.93 and 218,621.93 is: 299,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,134.90 : 311,175.93 = 218,621.93 : x
  2. Step 2: Convert to fraction form
    227,134.90/311,175.93 = 218,621.93/x
  3. Step 3: Cross multiply
    227,134.90x = 311,175.93 × 218,621.93
  4. Step 4: Simplify right side
    227,134.90x = 68,029,881,293.04
  5. Step 5: Solve for x
    x = 68,029,881,293.04/227,134.90
  6. Step 6: Final answer
    x = 299,513.11

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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.