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Finding the Fourth Proportional to 287,521.37, 396,781.11 and 166,734.37

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Solution

The fourth proportional to 287,521.37, 396,781.11 and 166,734.37 is: 230,094.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,521.37 : 396,781.11 = 166,734.37 : x
  2. Step 2: Convert to fraction form
    287,521.37/396,781.11 = 166,734.37/x
  3. Step 3: Cross multiply
    287,521.37x = 396,781.11 × 166,734.37
  4. Step 4: Simplify right side
    287,521.37x = 66,157,048,403.75
  5. Step 5: Solve for x
    x = 66,157,048,403.75/287,521.37
  6. Step 6: Final answer
    x = 230,094.37

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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.