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Finding the Fourth Proportional to 326,859.44, 450,936.30 and 189,012.88

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Solution

The fourth proportional to 326,859.44, 450,936.30 and 189,012.88 is: 260,762.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,859.44 : 450,936.30 = 189,012.88 : x
  2. Step 2: Convert to fraction form
    326,859.44/450,936.30 = 189,012.88/x
  3. Step 3: Cross multiply
    326,859.44x = 450,936.30 × 189,012.88
  4. Step 4: Simplify right side
    326,859.44x = 85,232,768,759.54
  5. Step 5: Solve for x
    x = 85,232,768,759.54/326,859.44
  6. Step 6: Final answer
    x = 260,762.76

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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.