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Finding the Fourth Proportional to 275,718.66, 412,996.74 and 126,084.86

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Solution

The fourth proportional to 275,718.66, 412,996.74 and 126,084.86 is: 188,861.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,718.66 : 412,996.74 = 126,084.86 : x
  2. Step 2: Convert to fraction form
    275,718.66/412,996.74 = 126,084.86/x
  3. Step 3: Cross multiply
    275,718.66x = 412,996.74 × 126,084.86
  4. Step 4: Simplify right side
    275,718.66x = 52,072,636,143.36
  5. Step 5: Solve for x
    x = 52,072,636,143.36/275,718.66
  6. Step 6: Final answer
    x = 188,861.49

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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.