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Finding the Fourth Proportional to 479,987.20, 662,467.26 and 276,022

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Solution

The fourth proportional to 479,987.20, 662,467.26 and 276,022 is: 380,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,987.20 : 662,467.26 = 276,022 : x
  2. Step 2: Convert to fraction form
    479,987.20/662,467.26 = 276,022/x
  3. Step 3: Cross multiply
    479,987.20x = 662,467.26 × 276,022
  4. Step 4: Simplify right side
    479,987.20x = 182,855,538,039.72
  5. Step 5: Solve for x
    x = 182,855,538,039.72/479,987.20
  6. Step 6: Final answer
    x = 380,959.20

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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.