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Finding the Fourth Proportional to 481,996.97, 665,003.81 and 278,020.54

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Solution

The fourth proportional to 481,996.97, 665,003.81 and 278,020.54 is: 383,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,996.97 : 665,003.81 = 278,020.54 : x
  2. Step 2: Convert to fraction form
    481,996.97/665,003.81 = 278,020.54/x
  3. Step 3: Cross multiply
    481,996.97x = 665,003.81 × 278,020.54
  4. Step 4: Simplify right side
    481,996.97x = 184,884,717,390.80
  5. Step 5: Solve for x
    x = 184,884,717,390.80/481,996.97
  6. Step 6: Final answer
    x = 383,580.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.