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Finding the Fourth Proportional to 381,245.86, 526,063.53 and 220,075.30

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Solution

The fourth proportional to 381,245.86, 526,063.53 and 220,075.30 is: 303,671.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,245.86 : 526,063.53 = 220,075.30 : x
  2. Step 2: Convert to fraction form
    381,245.86/526,063.53 = 220,075.30/x
  3. Step 3: Cross multiply
    381,245.86x = 526,063.53 × 220,075.30
  4. Step 4: Simplify right side
    381,245.86x = 115,773,589,183.81
  5. Step 5: Solve for x
    x = 115,773,589,183.81/381,245.86
  6. Step 6: Final answer
    x = 303,671.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.