Finding the Fourth Proportional to 402,939.49, 556,044.69 and 221,651.31
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Solution
The fourth proportional to 402,939.49, 556,044.69 and 221,651.31 is: 305,872.32
Step by Step Solution
- Step 1: Write the proportion equation
402,939.49 : 556,044.69 = 221,651.31 : x - Step 2: Convert to fraction form
402,939.49/556,044.69 = 221,651.31/x - Step 3: Cross multiply
402,939.49x = 556,044.69 × 221,651.31 - Step 4: Simplify right side
402,939.49x = 123,248,035,153.67 - Step 5: Solve for x
x = 123,248,035,153.67/402,939.49 - Step 6: Final answer
x = 305,872.32
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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.