Finding the Fourth Proportional to 303,608.20, 455,412.30 and 214,961.80
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Solution
The fourth proportional to 303,608.20, 455,412.30 and 214,961.80 is: 322,442.70
Step by Step Solution
- Step 1: Write the proportion equation
303,608.20 : 455,412.30 = 214,961.80 : x - Step 2: Convert to fraction form
303,608.20/455,412.30 = 214,961.80/x - Step 3: Cross multiply
303,608.20x = 455,412.30 × 214,961.80 - Step 4: Simplify right side
303,608.20x = 97,896,247,750.14 - Step 5: Solve for x
x = 97,896,247,750.14/303,608.20 - Step 6: Final answer
x = 322,442.70
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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.