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Finding the Fourth Proportional to 264,214.30, 396,321.45 and 259,840.30

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Solution

The fourth proportional to 264,214.30, 396,321.45 and 259,840.30 is: 389,760.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,214.30 : 396,321.45 = 259,840.30 : x
  2. Step 2: Convert to fraction form
    264,214.30/396,321.45 = 259,840.30/x
  3. Step 3: Cross multiply
    264,214.30x = 396,321.45 × 259,840.30
  4. Step 4: Simplify right side
    264,214.30x = 102,980,284,464.44
  5. Step 5: Solve for x
    x = 102,980,284,464.44/264,214.30
  6. Step 6: Final answer
    x = 389,760.45

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1.5x scale

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.