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Finding the Fourth Proportional to 252,879.56, 348,980.83 and 139,709.60

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Solution

The fourth proportional to 252,879.56, 348,980.83 and 139,709.60 is: 192,803.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,879.56 : 348,980.83 = 139,709.60 : x
  2. Step 2: Convert to fraction form
    252,879.56/348,980.83 = 139,709.60/x
  3. Step 3: Cross multiply
    252,879.56x = 348,980.83 × 139,709.60
  4. Step 4: Simplify right side
    252,879.56x = 48,755,970,072.79
  5. Step 5: Solve for x
    x = 48,755,970,072.79/252,879.56
  6. Step 6: Final answer
    x = 192,803.13

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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.