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Finding the Fourth Proportional to 263,317.80, 394,976.70 and 210,829.80

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Solution

The fourth proportional to 263,317.80, 394,976.70 and 210,829.80 is: 316,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,317.80 : 394,976.70 = 210,829.80 : x
  2. Step 2: Convert to fraction form
    263,317.80/394,976.70 = 210,829.80/x
  3. Step 3: Cross multiply
    263,317.80x = 394,976.70 × 210,829.80
  4. Step 4: Simplify right side
    263,317.80x = 83,272,858,665.66
  5. Step 5: Solve for x
    x = 83,272,858,665.66/263,317.80
  6. Step 6: Final answer
    x = 316,244.70

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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.