Finding the Fourth Proportional to 421,578.25, 632,375.60 and 155,201.65
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Solution
The fourth proportional to 421,578.25, 632,375.60 and 155,201.65 is: 232,805.50
Step by Step Solution
- Step 1: Write the proportion equation
421,578.25 : 632,375.60 = 155,201.65 : x - Step 2: Convert to fraction form
421,578.25/632,375.60 = 155,201.65/x - Step 3: Cross multiply
421,578.25x = 632,375.60 × 155,201.65 - Step 4: Simplify right side
421,578.25x = 98,145,736,539.74 - Step 5: Solve for x
x = 98,145,736,539.74/421,578.25 - Step 6: Final answer
x = 232,805.50
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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.