Finding the Fourth Proportional to 321,477.12, 482,149.80 and 121,728.60
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Solution
The fourth proportional to 321,477.12, 482,149.80 and 121,728.60 is: 182,567.95
Step by Step Solution
- Step 1: Write the proportion equation
321,477.12 : 482,149.80 = 121,728.60 : x - Step 2: Convert to fraction form
321,477.12/482,149.80 = 121,728.60/x - Step 3: Cross multiply
321,477.12x = 482,149.80 × 121,728.60 - Step 4: Simplify right side
321,477.12x = 58,691,420,144.28 - Step 5: Solve for x
x = 58,691,420,144.28/321,477.12 - Step 6: Final answer
x = 182,567.95
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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.