Finding the Fourth Proportional to 226,905.86, 312,991.99 and 139,705.05
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Solution
The fourth proportional to 226,905.86, 312,991.99 and 139,705.05 is: 192,707.94
Step by Step Solution
- Step 1: Write the proportion equation
226,905.86 : 312,991.99 = 139,705.05 : x - Step 2: Convert to fraction form
226,905.86/312,991.99 = 139,705.05/x - Step 3: Cross multiply
226,905.86x = 312,991.99 × 139,705.05 - Step 4: Simplify right side
226,905.86x = 43,726,561,143.97 - Step 5: Solve for x
x = 43,726,561,143.97/226,905.86 - Step 6: Final answer
x = 192,707.94
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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.