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Finding the Fourth Proportional to 425,550.36, 638,324.37 and 126,054.29

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Solution

The fourth proportional to 425,550.36, 638,324.37 and 126,054.29 is: 189,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,550.36 : 638,324.37 = 126,054.29 : x
  2. Step 2: Convert to fraction form
    425,550.36/638,324.37 = 126,054.29/x
  3. Step 3: Cross multiply
    425,550.36x = 638,324.37 × 126,054.29
  4. Step 4: Simplify right side
    425,550.36x = 80,463,526,845.86
  5. Step 5: Solve for x
    x = 80,463,526,845.86/425,550.36
  6. Step 6: Final answer
    x = 189,081.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.