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Finding the Fourth Proportional to 287,044.96, 396,137.60 and 159,723.32

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Solution

The fourth proportional to 287,044.96, 396,137.60 and 159,723.32 is: 220,426.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,044.96 : 396,137.60 = 159,723.32 : x
  2. Step 2: Convert to fraction form
    287,044.96/396,137.60 = 159,723.32/x
  3. Step 3: Cross multiply
    287,044.96x = 396,137.60 × 159,723.32
  4. Step 4: Simplify right side
    287,044.96x = 63,272,412,648.83
  5. Step 5: Solve for x
    x = 63,272,412,648.83/287,044.96
  6. Step 6: Final answer
    x = 220,426.84

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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.