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Finding the Fourth Proportional to 321,601.44, 443,798.70 and 178,374.72

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Solution

The fourth proportional to 321,601.44, 443,798.70 and 178,374.72 is: 246,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,601.44 : 443,798.70 = 178,374.72 : x
  2. Step 2: Convert to fraction form
    321,601.44/443,798.70 = 178,374.72/x
  3. Step 3: Cross multiply
    321,601.44x = 443,798.70 × 178,374.72
  4. Step 4: Simplify right side
    321,601.44x = 79,162,468,848.86
  5. Step 5: Solve for x
    x = 79,162,468,848.86/321,601.44
  6. Step 6: Final answer
    x = 246,150.85

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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.