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Finding the Fourth Proportional to 355,891.38, 491,128.77 and 192,547.36

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Solution

The fourth proportional to 355,891.38, 491,128.77 and 192,547.36 is: 265,714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,891.38 : 491,128.77 = 192,547.36 : x
  2. Step 2: Convert to fraction form
    355,891.38/491,128.77 = 192,547.36/x
  3. Step 3: Cross multiply
    355,891.38x = 491,128.77 × 192,547.36
  4. Step 4: Simplify right side
    355,891.38x = 94,565,546,855.73
  5. Step 5: Solve for x
    x = 94,565,546,855.73/355,891.38
  6. Step 6: Final answer
    x = 265,714.63

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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.