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Finding the Fourth Proportional to 378,326.78, 522,094.46 and 208,566.98

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Solution

The fourth proportional to 378,326.78, 522,094.46 and 208,566.98 is: 287,824.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,326.78 : 522,094.46 = 208,566.98 : x
  2. Step 2: Convert to fraction form
    378,326.78/522,094.46 = 208,566.98/x
  3. Step 3: Cross multiply
    378,326.78x = 522,094.46 × 208,566.98
  4. Step 4: Simplify right side
    378,326.78x = 108,891,664,796.93
  5. Step 5: Solve for x
    x = 108,891,664,796.93/378,326.78
  6. Step 6: Final answer
    x = 287,824.36

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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.