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Finding the Fourth Proportional to 287,399.46, 396,611.37 and 166,610.77

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Solution

The fourth proportional to 287,399.46, 396,611.37 and 166,610.77 is: 229,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,399.46 : 396,611.37 = 166,610.77 : x
  2. Step 2: Convert to fraction form
    287,399.46/396,611.37 = 166,610.77/x
  3. Step 3: Cross multiply
    287,399.46x = 396,611.37 × 166,610.77
  4. Step 4: Simplify right side
    287,399.46x = 66,079,726,985.87
  5. Step 5: Solve for x
    x = 66,079,726,985.87/287,399.46
  6. Step 6: Final answer
    x = 229,922.94

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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.