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Finding the Fourth Proportional to 439,861.70, 606,992.60 and 248,879.22

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Solution

The fourth proportional to 439,861.70, 606,992.60 and 248,879.22 is: 343,443.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,861.70 : 606,992.60 = 248,879.22 : x
  2. Step 2: Convert to fraction form
    439,861.70/606,992.60 = 248,879.22/x
  3. Step 3: Cross multiply
    439,861.70x = 606,992.60 × 248,879.22
  4. Step 4: Simplify right side
    439,861.70x = 151,067,844,833.77
  5. Step 5: Solve for x
    x = 151,067,844,833.77/439,861.70
  6. Step 6: Final answer
    x = 343,443.96

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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.