Finding the Fourth Proportional to 421,805.12, 582,102.50 and 258,458.80
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Solution
The fourth proportional to 421,805.12, 582,102.50 and 258,458.80 is: 356,680.15
Step by Step Solution
- Step 1: Write the proportion equation
421,805.12 : 582,102.50 = 258,458.80 : x - Step 2: Convert to fraction form
421,805.12/582,102.50 = 258,458.80/x - Step 3: Cross multiply
421,805.12x = 582,102.50 × 258,458.80 - Step 4: Simplify right side
421,805.12x = 150,449,513,627 - Step 5: Solve for x
x = 150,449,513,627/421,805.12 - Step 6: Final answer
x = 356,680.15
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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.