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Finding the Fourth Proportional to 287,009.62, 396,092.21 and 159,685.48

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Solution

The fourth proportional to 287,009.62, 396,092.21 and 159,685.48 is: 220,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,009.62 : 396,092.21 = 159,685.48 : x
  2. Step 2: Convert to fraction form
    287,009.62/396,092.21 = 159,685.48/x
  3. Step 3: Cross multiply
    287,009.62x = 396,092.21 × 159,685.48
  4. Step 4: Simplify right side
    287,009.62x = 63,250,173,879.68
  5. Step 5: Solve for x
    x = 63,250,173,879.68/287,009.62
  6. Step 6: Final answer
    x = 220,376.49

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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.