Finding the Fourth Proportional to 218,708.79, 301,821.84 and 123,217.08
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Solution
The fourth proportional to 218,708.79, 301,821.84 and 123,217.08 is: 170,041.66
Step by Step Solution
- Step 1: Write the proportion equation
218,708.79 : 301,821.84 = 123,217.08 : x - Step 2: Convert to fraction form
218,708.79/301,821.84 = 123,217.08/x - Step 3: Cross multiply
218,708.79x = 301,821.84 × 123,217.08 - Step 4: Simplify right side
218,708.79x = 37,189,605,805.03 - Step 5: Solve for x
x = 37,189,605,805.03/218,708.79 - Step 6: Final answer
x = 170,041.66
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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.