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Finding the Fourth Proportional to 321,658.45, 443,941.89 and 178,464.62

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Solution

The fourth proportional to 321,658.45, 443,941.89 and 178,464.62 is: 246,310.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,658.45 : 443,941.89 = 178,464.62 : x
  2. Step 2: Convert to fraction form
    321,658.45/443,941.89 = 178,464.62/x
  3. Step 3: Cross multiply
    321,658.45x = 443,941.89 × 178,464.62
  4. Step 4: Simplify right side
    321,658.45x = 79,227,920,700.93
  5. Step 5: Solve for x
    x = 79,227,920,700.93/321,658.45
  6. Step 6: Final answer
    x = 246,310.71

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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.