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Finding the Fourth Proportional to 262,381.90, 394,447.65 and 223,890.70

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Solution

The fourth proportional to 262,381.90, 394,447.65 and 223,890.70 is: 336,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,381.90 : 394,447.65 = 223,890.70 : x
  2. Step 2: Convert to fraction form
    262,381.90/394,447.65 = 223,890.70/x
  3. Step 3: Cross multiply
    262,381.90x = 394,447.65 × 223,890.70
  4. Step 4: Simplify right side
    262,381.90x = 88,313,160,471.86
  5. Step 5: Solve for x
    x = 88,313,160,471.86/262,381.90
  6. Step 6: Final answer
    x = 336,582.52

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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.