Finding the Fourth Proportional to 389,114.69, 536,986.47 and 219,348.82
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Solution
The fourth proportional to 389,114.69, 536,986.47 and 219,348.82 is: 302,705.99
Step by Step Solution
- Step 1: Write the proportion equation
389,114.69 : 536,986.47 = 219,348.82 : x - Step 2: Convert to fraction form
389,114.69/536,986.47 = 219,348.82/x - Step 3: Cross multiply
389,114.69x = 536,986.47 × 219,348.82 - Step 4: Simplify right side
389,114.69x = 117,787,345,865.53 - Step 5: Solve for x
x = 117,787,345,865.53/389,114.69 - Step 6: Final answer
x = 302,705.99
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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.