Finding the Fourth Proportional to 218,749.88, 328,159.25 and 76,638.62
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Solution
The fourth proportional to 218,749.88, 328,159.25 and 76,638.62 is: 114,969.99
Step by Step Solution
- Step 1: Write the proportion equation
218,749.88 : 328,159.25 = 76,638.62 : x - Step 2: Convert to fraction form
218,749.88/328,159.25 = 76,638.62/x - Step 3: Cross multiply
218,749.88x = 328,159.25 × 76,638.62 - Step 4: Simplify right side
218,749.88x = 25,149,672,784.83 - Step 5: Solve for x
x = 25,149,672,784.83/218,749.88 - Step 6: Final answer
x = 114,969.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.