Finding the Fourth Proportional to 222,342.12, 306,829.08 and 121,740.12
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Solution
The fourth proportional to 222,342.12, 306,829.08 and 121,740.12 is: 167,999.70
Step by Step Solution
- Step 1: Write the proportion equation
222,342.12 : 306,829.08 = 121,740.12 : x - Step 2: Convert to fraction form
222,342.12/306,829.08 = 121,740.12/x - Step 3: Cross multiply
222,342.12x = 306,829.08 × 121,740.12 - Step 4: Simplify right side
222,342.12x = 37,353,409,018.69 - Step 5: Solve for x
x = 37,353,409,018.69/222,342.12 - Step 6: Final answer
x = 167,999.70
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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.