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Finding the Fourth Proportional to 378,307.44, 522,067.80 and 208,547.64

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Solution

The fourth proportional to 378,307.44, 522,067.80 and 208,547.64 is: 287,797.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,307.44 : 522,067.80 = 208,547.64 : x
  2. Step 2: Convert to fraction form
    378,307.44/522,067.80 = 208,547.64/x
  3. Step 3: Cross multiply
    378,307.44x = 522,067.80 × 208,547.64
  4. Step 4: Simplify right side
    378,307.44x = 108,876,007,609.99
  5. Step 5: Solve for x
    x = 108,876,007,609.99/378,307.44
  6. Step 6: Final answer
    x = 287,797.69

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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.