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Finding the Fourth Proportional to 262,986.40, 393,896.40 and 203,629.60

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Solution

The fourth proportional to 262,986.40, 393,896.40 and 203,629.60 is: 304,992.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,986.40 : 393,896.40 = 203,629.60 : x
  2. Step 2: Convert to fraction form
    262,986.40/393,896.40 = 203,629.60/x
  3. Step 3: Cross multiply
    262,986.40x = 393,896.40 × 203,629.60
  4. Step 4: Simplify right side
    262,986.40x = 80,208,966,373.44
  5. Step 5: Solve for x
    x = 80,208,966,373.44/262,986.40
  6. Step 6: Final answer
    x = 304,992.83

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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.