Finding the Fourth Proportional to 222,129.52, 306,543.20 and 121,529.68
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Solution
The fourth proportional to 222,129.52, 306,543.20 and 121,529.68 is: 167,713.40
Step by Step Solution
- Step 1: Write the proportion equation
222,129.52 : 306,543.20 = 121,529.68 : x - Step 2: Convert to fraction form
222,129.52/306,543.20 = 121,529.68/x - Step 3: Cross multiply
222,129.52x = 306,543.20 × 121,529.68 - Step 4: Simplify right side
222,129.52x = 37,254,097,002.18 - Step 5: Solve for x
x = 37,254,097,002.18/222,129.52 - Step 6: Final answer
x = 167,713.40
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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.