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Finding the Fourth Proportional to 262,893.60, 394,340.40 and 231,789.60

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Solution

The fourth proportional to 262,893.60, 394,340.40 and 231,789.60 is: 347,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,893.60 : 394,340.40 = 231,789.60 : x
  2. Step 2: Convert to fraction form
    262,893.60/394,340.40 = 231,789.60/x
  3. Step 3: Cross multiply
    262,893.60x = 394,340.40 × 231,789.60
  4. Step 4: Simplify right side
    262,893.60x = 91,404,003,579.84
  5. Step 5: Solve for x
    x = 91,404,003,579.84/262,893.60
  6. Step 6: Final answer
    x = 347,684.40

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Half scale
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Double scale
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Similar ratio
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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.