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Finding the Fourth Proportional to 326,768.77, 490,236.32 and 191,946.86

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Solution

The fourth proportional to 326,768.77, 490,236.32 and 191,946.86 is: 287,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,768.77 : 490,236.32 = 191,946.86 : x
  2. Step 2: Convert to fraction form
    326,768.77/490,236.32 = 191,946.86/x
  3. Step 3: Cross multiply
    326,768.77x = 490,236.32 × 191,946.86
  4. Step 4: Simplify right side
    326,768.77x = 94,099,319,690.54
  5. Step 5: Solve for x
    x = 94,099,319,690.54/326,768.77
  6. Step 6: Final answer
    x = 287,969.13

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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.