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Finding the Fourth Proportional to 443,613.20, 665,419.80 and 163,072.40

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Solution

The fourth proportional to 443,613.20, 665,419.80 and 163,072.40 is: 244,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,613.20 : 665,419.80 = 163,072.40 : x
  2. Step 2: Convert to fraction form
    443,613.20/665,419.80 = 163,072.40/x
  3. Step 3: Cross multiply
    443,613.20x = 665,419.80 × 163,072.40
  4. Step 4: Simplify right side
    443,613.20x = 108,511,603,793.52
  5. Step 5: Solve for x
    x = 108,511,603,793.52/443,613.20
  6. Step 6: Final answer
    x = 244,608.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.