Finding the Fourth Proportional to 217,679.84, 300,399.36 and 122,187.68
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Solution
The fourth proportional to 217,679.84, 300,399.36 and 122,187.68 is: 168,619.66
Step by Step Solution
- Step 1: Write the proportion equation
217,679.84 : 300,399.36 = 122,187.68 : x - Step 2: Convert to fraction form
217,679.84/300,399.36 = 122,187.68/x - Step 3: Cross multiply
217,679.84x = 300,399.36 × 122,187.68 - Step 4: Simplify right side
217,679.84x = 36,705,100,871.88 - Step 5: Solve for x
x = 36,705,100,871.88/217,679.84 - Step 6: Final answer
x = 168,619.66
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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.