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Finding the Fourth Proportional to 321,552.40, 443,743.50 and 178,325.68

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Solution

The fourth proportional to 321,552.40, 443,743.50 and 178,325.68 is: 246,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,552.40 : 443,743.50 = 178,325.68 : x
  2. Step 2: Convert to fraction form
    321,552.40/443,743.50 = 178,325.68/x
  3. Step 3: Cross multiply
    321,552.40x = 443,743.50 × 178,325.68
  4. Step 4: Simplify right side
    321,552.40x = 79,130,861,383.08
  5. Step 5: Solve for x
    x = 79,130,861,383.08/321,552.40
  6. Step 6: Final answer
    x = 246,090.10

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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.