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Finding the Fourth Proportional to 548,037.20, 821,861.40 and 193,062.80

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Solution

The fourth proportional to 548,037.20, 821,861.40 and 193,062.80 is: 289,525.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,037.20 : 821,861.40 = 193,062.80 : x
  2. Step 2: Convert to fraction form
    548,037.20/821,861.40 = 193,062.80/x
  3. Step 3: Cross multiply
    548,037.20x = 821,861.40 × 193,062.80
  4. Step 4: Simplify right side
    548,037.20x = 158,670,863,095.92
  5. Step 5: Solve for x
    x = 158,670,863,095.92/548,037.20
  6. Step 6: Final answer
    x = 289,525.72

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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.