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Finding the Fourth Proportional to 321,322.35, 443,424.89 and 178,091.64

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Solution

The fourth proportional to 321,322.35, 443,424.89 and 178,091.64 is: 245,766.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,322.35 : 443,424.89 = 178,091.64 : x
  2. Step 2: Convert to fraction form
    321,322.35/443,424.89 = 178,091.64/x
  3. Step 3: Cross multiply
    321,322.35x = 443,424.89 × 178,091.64
  4. Step 4: Simplify right side
    321,322.35x = 78,970,264,986.46
  5. Step 5: Solve for x
    x = 78,970,264,986.46/321,322.35
  6. Step 6: Final answer
    x = 245,766.49

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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.