Finding the Fourth Proportional to 278,135.56, 417,220.97 and 107,438.70
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Solution
The fourth proportional to 278,135.56, 417,220.97 and 107,438.70 is: 161,164.86
Step by Step Solution
- Step 1: Write the proportion equation
278,135.56 : 417,220.97 = 107,438.70 : x - Step 2: Convert to fraction form
278,135.56/417,220.97 = 107,438.70/x - Step 3: Cross multiply
278,135.56x = 417,220.97 × 107,438.70 - Step 4: Simplify right side
278,135.56x = 44,825,678,629.54 - Step 5: Solve for x
x = 44,825,678,629.54/278,135.56 - Step 6: Final answer
x = 161,164.86
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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.