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Finding the Fourth Proportional to 287,081.54, 396,166.65 and 179,710.77

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Solution

The fourth proportional to 287,081.54, 396,166.65 and 179,710.77 is: 247,997.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,081.54 : 396,166.65 = 179,710.77 : x
  2. Step 2: Convert to fraction form
    287,081.54/396,166.65 = 179,710.77/x
  3. Step 3: Cross multiply
    287,081.54x = 396,166.65 × 179,710.77
  4. Step 4: Simplify right side
    287,081.54x = 71,195,413,719.82
  5. Step 5: Solve for x
    x = 71,195,413,719.82/287,081.54
  6. Step 6: Final answer
    x = 247,997.19

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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.