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Finding the Fourth Proportional to 505,234.12, 697,222.98 and 278,879.56

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Solution

The fourth proportional to 505,234.12, 697,222.98 and 278,879.56 is: 384,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,234.12 : 697,222.98 = 278,879.56 : x
  2. Step 2: Convert to fraction form
    505,234.12/697,222.98 = 278,879.56/x
  3. Step 3: Cross multiply
    505,234.12x = 697,222.98 × 278,879.56
  4. Step 4: Simplify right side
    505,234.12x = 194,441,237,884.29
  5. Step 5: Solve for x
    x = 194,441,237,884.29/505,234.12
  6. Step 6: Final answer
    x = 384,853.73

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1.5x scale

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.