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Finding the Fourth Proportional to 481,995.09, 665,001.23 and 278,018.66

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Solution

The fourth proportional to 481,995.09, 665,001.23 and 278,018.66 is: 383,578.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,995.09 : 665,001.23 = 278,018.66 : x
  2. Step 2: Convert to fraction form
    481,995.09/665,001.23 = 278,018.66/x
  3. Step 3: Cross multiply
    481,995.09x = 665,001.23 × 278,018.66
  4. Step 4: Simplify right side
    481,995.09x = 184,882,751,135.36
  5. Step 5: Solve for x
    x = 184,882,751,135.36/481,995.09
  6. Step 6: Final answer
    x = 383,578.08

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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.