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Finding the Fourth Proportional to 443,201.60, 664,807.80 and 143,679.80

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Solution

The fourth proportional to 443,201.60, 664,807.80 and 143,679.80 is: 215,521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,201.60 : 664,807.80 = 143,679.80 : x
  2. Step 2: Convert to fraction form
    443,201.60/664,807.80 = 143,679.80/x
  3. Step 3: Cross multiply
    443,201.60x = 664,807.80 × 143,679.80
  4. Step 4: Simplify right side
    443,201.60x = 95,519,451,742.44
  5. Step 5: Solve for x
    x = 95,519,451,742.44/443,201.60
  6. Step 6: Final answer
    x = 215,521.45

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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.