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Finding the Fourth Proportional to 321,516.64, 443,692.20 and 178,273

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Solution

The fourth proportional to 321,516.64, 443,692.20 and 178,273 is: 246,016.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,516.64 : 443,692.20 = 178,273 : x
  2. Step 2: Convert to fraction form
    321,516.64/443,692.20 = 178,273/x
  3. Step 3: Cross multiply
    321,516.64x = 443,692.20 × 178,273
  4. Step 4: Simplify right side
    321,516.64x = 79,098,339,570.60
  5. Step 5: Solve for x
    x = 79,098,339,570.60/321,516.64
  6. Step 6: Final answer
    x = 246,016.32

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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.