Finding the Fourth Proportional to 393,220.98, 542,638.44 and 218,784.65
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Solution
The fourth proportional to 393,220.98, 542,638.44 and 218,784.65 is: 301,919.19
Step by Step Solution
- Step 1: Write the proportion equation
393,220.98 : 542,638.44 = 218,784.65 : x - Step 2: Convert to fraction form
393,220.98/542,638.44 = 218,784.65/x - Step 3: Cross multiply
393,220.98x = 542,638.44 × 218,784.65 - Step 4: Simplify right side
393,220.98x = 118,720,958,458.75 - Step 5: Solve for x
x = 118,720,958,458.75/393,220.98 - Step 6: Final answer
x = 301,919.19
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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.