Finding the Fourth Proportional to 222,455.16, 306,986.38 and 120,478.26
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Solution
The fourth proportional to 222,455.16, 306,986.38 and 120,478.26 is: 166,259.06
Step by Step Solution
- Step 1: Write the proportion equation
222,455.16 : 306,986.38 = 120,478.26 : x - Step 2: Convert to fraction form
222,455.16/306,986.38 = 120,478.26/x - Step 3: Cross multiply
222,455.16x = 306,986.38 × 120,478.26 - Step 4: Simplify right side
222,455.16x = 36,985,184,906.10 - Step 5: Solve for x
x = 36,985,184,906.10/222,455.16 - Step 6: Final answer
x = 166,259.06
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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.