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Finding the Fourth Proportional to 443,879.82, 612,558.63 and 239,934.69

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Solution

The fourth proportional to 443,879.82, 612,558.63 and 239,934.69 is: 331,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,879.82 : 612,558.63 = 239,934.69 : x
  2. Step 2: Convert to fraction form
    443,879.82/612,558.63 = 239,934.69/x
  3. Step 3: Cross multiply
    443,879.82x = 612,558.63 × 239,934.69
  4. Step 4: Simplify right side
    443,879.82x = 146,974,064,995.88
  5. Step 5: Solve for x
    x = 146,974,064,995.88/443,879.82
  6. Step 6: Final answer
    x = 331,112.29

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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.