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Finding the Fourth Proportional to 366,072.48, 505,080 and 251,385.60

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Solution

The fourth proportional to 366,072.48, 505,080 and 251,385.60 is: 346,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,072.48 : 505,080 = 251,385.60 : x
  2. Step 2: Convert to fraction form
    366,072.48/505,080 = 251,385.60/x
  3. Step 3: Cross multiply
    366,072.48x = 505,080 × 251,385.60
  4. Step 4: Simplify right side
    366,072.48x = 126,969,838,848
  5. Step 5: Solve for x
    x = 126,969,838,848/366,072.48
  6. Step 6: Final answer
    x = 346,843.44

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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.