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Finding the Fourth Proportional to 373,287.36, 515,121.72 and 220,374.81

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Solution

The fourth proportional to 373,287.36, 515,121.72 and 220,374.81 is: 304,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,287.36 : 515,121.72 = 220,374.81 : x
  2. Step 2: Convert to fraction form
    373,287.36/515,121.72 = 220,374.81/x
  3. Step 3: Cross multiply
    373,287.36x = 515,121.72 × 220,374.81
  4. Step 4: Simplify right side
    373,287.36x = 113,519,852,906.02
  5. Step 5: Solve for x
    x = 113,519,852,906.02/373,287.36
  6. Step 6: Final answer
    x = 304,108.49

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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.