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Finding the Fourth Proportional to 208,396.83, 287,481.91 and 131,786.82

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Solution

The fourth proportional to 208,396.83, 287,481.91 and 131,786.82 is: 181,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,396.83 : 287,481.91 = 131,786.82 : x
  2. Step 2: Convert to fraction form
    208,396.83/287,481.91 = 131,786.82/x
  3. Step 3: Cross multiply
    208,396.83x = 287,481.91 × 131,786.82
  4. Step 4: Simplify right side
    208,396.83x = 37,886,326,726.43
  5. Step 5: Solve for x
    x = 37,886,326,726.43/208,396.83
  6. Step 6: Final answer
    x = 181,798.96

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1.5x scale

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.