Finding the Fourth Proportional to 221,039.75, 305,034.90 and 120,437.75
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Solution
The fourth proportional to 221,039.75, 305,034.90 and 120,437.75 is: 166,204.12
Step by Step Solution
- Step 1: Write the proportion equation
221,039.75 : 305,034.90 = 120,437.75 : x - Step 2: Convert to fraction form
221,039.75/305,034.90 = 120,437.75/x - Step 3: Cross multiply
221,039.75x = 305,034.90 × 120,437.75 - Step 4: Simplify right side
221,039.75x = 36,737,717,027.48 - Step 5: Solve for x
x = 36,737,717,027.48/221,039.75 - Step 6: Final answer
x = 166,204.12
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1.5x scale
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.