Finding the Fourth Proportional to 210,631.68, 290,703.36 and 121,190.40
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Solution
The fourth proportional to 210,631.68, 290,703.36 and 121,190.40 is: 167,260.96
Step by Step Solution
- Step 1: Write the proportion equation
210,631.68 : 290,703.36 = 121,190.40 : x - Step 2: Convert to fraction form
210,631.68/290,703.36 = 121,190.40/x - Step 3: Cross multiply
210,631.68x = 290,703.36 × 121,190.40 - Step 4: Simplify right side
210,631.68x = 35,230,456,479.74 - Step 5: Solve for x
x = 35,230,456,479.74/210,631.68 - Step 6: Final answer
x = 167,260.96
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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.