Finding the Fourth Proportional to 218,432.14, 301,409.81 and 121,611.75
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Solution
The fourth proportional to 218,432.14, 301,409.81 and 121,611.75 is: 167,809.43
Step by Step Solution
- Step 1: Write the proportion equation
218,432.14 : 301,409.81 = 121,611.75 : x - Step 2: Convert to fraction form
218,432.14/301,409.81 = 121,611.75/x - Step 3: Cross multiply
218,432.14x = 301,409.81 × 121,611.75 - Step 4: Simplify right side
218,432.14x = 36,654,973,178.97 - Step 5: Solve for x
x = 36,654,973,178.97/218,432.14 - Step 6: Final answer
x = 167,809.43
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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.