Finding the Fourth Proportional to 394,115.09, 543,967.35 and 258,070.02
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Solution
The fourth proportional to 394,115.09, 543,967.35 and 258,070.02 is: 356,194.60
Step by Step Solution
- Step 1: Write the proportion equation
394,115.09 : 543,967.35 = 258,070.02 : x - Step 2: Convert to fraction form
394,115.09/543,967.35 = 258,070.02/x - Step 3: Cross multiply
394,115.09x = 543,967.35 × 258,070.02 - Step 4: Simplify right side
394,115.09x = 140,381,664,893.85 - Step 5: Solve for x
x = 140,381,664,893.85/394,115.09 - Step 6: Final answer
x = 356,194.60
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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.