Finding the Fourth Proportional to 290,039.44, 435,009.84 and 79,628.08
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Solution
The fourth proportional to 290,039.44, 435,009.84 and 79,628.08 is: 119,428.58
Step by Step Solution
- Step 1: Write the proportion equation
290,039.44 : 435,009.84 = 79,628.08 : x - Step 2: Convert to fraction form
290,039.44/435,009.84 = 79,628.08/x - Step 3: Cross multiply
290,039.44x = 435,009.84 × 79,628.08 - Step 4: Simplify right side
290,039.44x = 34,638,998,340.31 - Step 5: Solve for x
x = 34,638,998,340.31/290,039.44 - Step 6: Final answer
x = 119,428.58
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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.