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Finding the Fourth Proportional to 208,473.75, 287,724.66 and 131,999.95

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Solution

The fourth proportional to 208,473.75, 287,724.66 and 131,999.95 is: 182,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,473.75 : 287,724.66 = 131,999.95 : x
  2. Step 2: Convert to fraction form
    208,473.75/287,724.66 = 131,999.95/x
  3. Step 3: Cross multiply
    208,473.75x = 287,724.66 × 131,999.95
  4. Step 4: Simplify right side
    208,473.75x = 37,979,641,407.65
  5. Step 5: Solve for x
    x = 37,979,641,407.65/208,473.75
  6. Step 6: Final answer
    x = 182,179.49

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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.