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Finding the Fourth Proportional to 383,464.60, 574,540.80 and 243,059.20

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Solution

The fourth proportional to 383,464.60, 574,540.80 and 243,059.20 is: 364,172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,464.60 : 574,540.80 = 243,059.20 : x
  2. Step 2: Convert to fraction form
    383,464.60/574,540.80 = 243,059.20/x
  3. Step 3: Cross multiply
    383,464.60x = 574,540.80 × 243,059.20
  4. Step 4: Simplify right side
    383,464.60x = 139,647,427,215.36
  5. Step 5: Solve for x
    x = 139,647,427,215.36/383,464.60
  6. Step 6: Final answer
    x = 364,172.93

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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.