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Finding the Fourth Proportional to 262,378.90, 394,443.15 and 223,887.70

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Solution

The fourth proportional to 262,378.90, 394,443.15 and 223,887.70 is: 336,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,378.90 : 394,443.15 = 223,887.70 : x
  2. Step 2: Convert to fraction form
    262,378.90/394,443.15 = 223,887.70/x
  3. Step 3: Cross multiply
    262,378.90x = 394,443.15 × 223,887.70
  4. Step 4: Simplify right side
    262,378.90x = 88,310,969,634.26
  5. Step 5: Solve for x
    x = 88,310,969,634.26/262,378.90
  6. Step 6: Final answer
    x = 336,578.02

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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.