Finding the Fourth Proportional to 312,505.74, 431,266.41 and 191,713.68
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Solution
The fourth proportional to 312,505.74, 431,266.41 and 191,713.68 is: 264,570.09
Step by Step Solution
- Step 1: Write the proportion equation
312,505.74 : 431,266.41 = 191,713.68 : x - Step 2: Convert to fraction form
312,505.74/431,266.41 = 191,713.68/x - Step 3: Cross multiply
312,505.74x = 431,266.41 × 191,713.68 - Step 4: Simplify right side
312,505.74x = 82,679,670,521.49 - Step 5: Solve for x
x = 82,679,670,521.49/312,505.74 - Step 6: Final answer
x = 264,570.09
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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.