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Finding the Fourth Proportional to 386,653.20, 580,205.60 and 161,994.44

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Solution

The fourth proportional to 386,653.20, 580,205.60 and 161,994.44 is: 243,086.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,653.20 : 580,205.60 = 161,994.44 : x
  2. Step 2: Convert to fraction form
    386,653.20/580,205.60 = 161,994.44/x
  3. Step 3: Cross multiply
    386,653.20x = 580,205.60 × 161,994.44
  4. Step 4: Simplify right side
    386,653.20x = 93,990,081,256.86
  5. Step 5: Solve for x
    x = 93,990,081,256.86/386,653.20
  6. Step 6: Final answer
    x = 243,086.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.