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Finding the Fourth Proportional to 321,660.32, 443,884.46 and 178,419.11

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Solution

The fourth proportional to 321,660.32, 443,884.46 and 178,419.11 is: 246,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,660.32 : 443,884.46 = 178,419.11 : x
  2. Step 2: Convert to fraction form
    321,660.32/443,884.46 = 178,419.11/x
  3. Step 3: Cross multiply
    321,660.32x = 443,884.46 × 178,419.11
  4. Step 4: Simplify right side
    321,660.32x = 79,197,467,184.51
  5. Step 5: Solve for x
    x = 79,197,467,184.51/321,660.32
  6. Step 6: Final answer
    x = 246,214.60

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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.