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Finding the Fourth Proportional to 311,950.20, 468,087.30 and 145,738.20

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Solution

The fourth proportional to 311,950.20, 468,087.30 and 145,738.20 is: 218,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,950.20 : 468,087.30 = 145,738.20 : x
  2. Step 2: Convert to fraction form
    311,950.20/468,087.30 = 145,738.20/x
  3. Step 3: Cross multiply
    311,950.20x = 468,087.30 × 145,738.20
  4. Step 4: Simplify right side
    311,950.20x = 68,218,200,544.86
  5. Step 5: Solve for x
    x = 68,218,200,544.86/311,950.20
  6. Step 6: Final answer
    x = 218,682.98

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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.