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Finding the Fourth Proportional to 263,141.70, 394,712.55 and 210,653.70

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Solution

The fourth proportional to 263,141.70, 394,712.55 and 210,653.70 is: 315,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,141.70 : 394,712.55 = 210,653.70 : x
  2. Step 2: Convert to fraction form
    263,141.70/394,712.55 = 210,653.70/x
  3. Step 3: Cross multiply
    263,141.70x = 394,712.55 × 210,653.70
  4. Step 4: Simplify right side
    263,141.70x = 83,147,659,093.94
  5. Step 5: Solve for x
    x = 83,147,659,093.94/263,141.70
  6. Step 6: Final answer
    x = 315,980.55

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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.