Finding the Fourth Proportional to 328,285.21, 492,086.39 and 138,587.26
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Solution
The fourth proportional to 328,285.21, 492,086.39 and 138,587.26 is: 207,736.75
Step by Step Solution
- Step 1: Write the proportion equation
328,285.21 : 492,086.39 = 138,587.26 : x - Step 2: Convert to fraction form
328,285.21/492,086.39 = 138,587.26/x - Step 3: Cross multiply
328,285.21x = 492,086.39 × 138,587.26 - Step 4: Simplify right side
328,285.21x = 68,196,902,550.24 - Step 5: Solve for x
x = 68,196,902,550.24/328,285.21 - Step 6: Final answer
x = 207,736.75
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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.