Finding the Fourth Proportional to 613,512.21, 920,489.75 and 214,211.81
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Solution
The fourth proportional to 613,512.21, 920,489.75 and 214,211.81 is: 321,395.03
Step by Step Solution
- Step 1: Write the proportion equation
613,512.21 : 920,489.75 = 214,211.81 : x - Step 2: Convert to fraction form
613,512.21/920,489.75 = 214,211.81/x - Step 3: Cross multiply
613,512.21x = 920,489.75 × 214,211.81 - Step 4: Simplify right side
613,512.21x = 197,179,775,433.95 - Step 5: Solve for x
x = 197,179,775,433.95/613,512.21 - Step 6: Final answer
x = 321,395.03
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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.