Finding the Fourth Proportional to 312,843.27, 431,494.39 and 205,374.09
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Solution
The fourth proportional to 312,843.27, 431,494.39 and 205,374.09 is: 283,265.70
Step by Step Solution
- Step 1: Write the proportion equation
312,843.27 : 431,494.39 = 205,374.09 : x - Step 2: Convert to fraction form
312,843.27/431,494.39 = 205,374.09/x - Step 3: Cross multiply
312,843.27x = 431,494.39 × 205,374.09 - Step 4: Simplify right side
312,843.27x = 88,617,767,686.36 - Step 5: Solve for x
x = 88,617,767,686.36/312,843.27 - Step 6: Final answer
x = 283,265.70
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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.