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Finding the Fourth Proportional to 259,804.60, 389,246.10 and 220,175.80

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Solution

The fourth proportional to 259,804.60, 389,246.10 and 220,175.80 is: 329,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,804.60 : 389,246.10 = 220,175.80 : x
  2. Step 2: Convert to fraction form
    259,804.60/389,246.10 = 220,175.80/x
  3. Step 3: Cross multiply
    259,804.60x = 389,246.10 × 220,175.80
  4. Step 4: Simplify right side
    259,804.60x = 85,702,571,464.38
  5. Step 5: Solve for x
    x = 85,702,571,464.38/259,804.60
  6. Step 6: Final answer
    x = 329,873.19

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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.