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Finding the Fourth Proportional to 321,199.96, 442,835.52 and 276,359.68

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Solution

The fourth proportional to 321,199.96, 442,835.52 and 276,359.68 is: 381,014.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,199.96 : 442,835.52 = 276,359.68 : x
  2. Step 2: Convert to fraction form
    321,199.96/442,835.52 = 276,359.68/x
  3. Step 3: Cross multiply
    321,199.96x = 442,835.52 × 276,359.68
  4. Step 4: Simplify right side
    321,199.96x = 122,381,882,599.83
  5. Step 5: Solve for x
    x = 122,381,882,599.83/321,199.96
  6. Step 6: Final answer
    x = 381,014.63

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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.