Finding the Fourth Proportional to 261,608.25, 392,416.16 and 74,619.75
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Solution
The fourth proportional to 261,608.25, 392,416.16 and 74,619.75 is: 111,930.70
Step by Step Solution
- Step 1: Write the proportion equation
261,608.25 : 392,416.16 = 74,619.75 : x - Step 2: Convert to fraction form
261,608.25/392,416.16 = 74,619.75/x - Step 3: Cross multiply
261,608.25x = 392,416.16 × 74,619.75 - Step 4: Simplify right side
261,608.25x = 29,281,995,382.06 - Step 5: Solve for x
x = 29,281,995,382.06/261,608.25 - Step 6: Final answer
x = 111,930.70
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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.