Finding the Fourth Proportional to 393,212.16, 542,626.23 and 218,775.63
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Solution
The fourth proportional to 393,212.16, 542,626.23 and 218,775.63 is: 301,906.72
Step by Step Solution
- Step 1: Write the proportion equation
393,212.16 : 542,626.23 = 218,775.63 : x - Step 2: Convert to fraction form
393,212.16/542,626.23 = 218,775.63/x - Step 3: Cross multiply
393,212.16x = 542,626.23 × 218,775.63 - Step 4: Simplify right side
393,212.16x = 118,713,395,322.78 - Step 5: Solve for x
x = 118,713,395,322.78/393,212.16 - Step 6: Final answer
x = 301,906.72
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1.5x scale
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.