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Finding the Fourth Proportional to 247,220.35, 341,162.44 and 139,790.81

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Solution

The fourth proportional to 247,220.35, 341,162.44 and 139,790.81 is: 192,910.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,220.35 : 341,162.44 = 139,790.81 : x
  2. Step 2: Convert to fraction form
    247,220.35/341,162.44 = 139,790.81/x
  3. Step 3: Cross multiply
    247,220.35x = 341,162.44 × 139,790.81
  4. Step 4: Simplify right side
    247,220.35x = 47,691,372,123.36
  5. Step 5: Solve for x
    x = 47,691,372,123.36/247,220.35
  6. Step 6: Final answer
    x = 192,910.39

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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.