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Finding the Fourth Proportional to 279,879.83, 386,296.45 and 177,885.44

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Solution

The fourth proportional to 279,879.83, 386,296.45 and 177,885.44 is: 245,521.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,879.83 : 386,296.45 = 177,885.44 : x
  2. Step 2: Convert to fraction form
    279,879.83/386,296.45 = 177,885.44/x
  3. Step 3: Cross multiply
    279,879.83x = 386,296.45 × 177,885.44
  4. Step 4: Simplify right side
    279,879.83x = 68,716,511,602.49
  5. Step 5: Solve for x
    x = 68,716,511,602.49/279,879.83
  6. Step 6: Final answer
    x = 245,521.49

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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.