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Finding the Fourth Proportional to 373,388.82, 515,262.84 and 203,619.30

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Solution

The fourth proportional to 373,388.82, 515,262.84 and 203,619.30 is: 280,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,388.82 : 515,262.84 = 203,619.30 : x
  2. Step 2: Convert to fraction form
    373,388.82/515,262.84 = 203,619.30/x
  3. Step 3: Cross multiply
    373,388.82x = 515,262.84 × 203,619.30
  4. Step 4: Simplify right side
    373,388.82x = 104,917,458,796.81
  5. Step 5: Solve for x
    x = 104,917,458,796.81/373,388.82
  6. Step 6: Final answer
    x = 280,987.15

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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.