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Finding the Fourth Proportional to 321,260.86, 443,338.79 and 178,020.79

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Solution

The fourth proportional to 321,260.86, 443,338.79 and 178,020.79 is: 245,668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,260.86 : 443,338.79 = 178,020.79 : x
  2. Step 2: Convert to fraction form
    321,260.86/443,338.79 = 178,020.79/x
  3. Step 3: Cross multiply
    321,260.86x = 443,338.79 × 178,020.79
  4. Step 4: Simplify right side
    321,260.86x = 78,923,519,748.40
  5. Step 5: Solve for x
    x = 78,923,519,748.40/321,260.86
  6. Step 6: Final answer
    x = 245,668.02

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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.