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Finding the Fourth Proportional to 443,133.20, 664,246.20 and 218,147.60

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Solution

The fourth proportional to 443,133.20, 664,246.20 and 218,147.60 is: 326,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,133.20 : 664,246.20 = 218,147.60 : x
  2. Step 2: Convert to fraction form
    443,133.20/664,246.20 = 218,147.60/x
  3. Step 3: Cross multiply
    443,133.20x = 664,246.20 × 218,147.60
  4. Step 4: Simplify right side
    443,133.20x = 144,903,714,339.12
  5. Step 5: Solve for x
    x = 144,903,714,339.12/443,133.20
  6. Step 6: Final answer
    x = 326,998.10

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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.