Finding the Fourth Proportional to 212,321.22, 292,969.84 and 121,659.74
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Solution
The fourth proportional to 212,321.22, 292,969.84 and 121,659.74 is: 167,871.28
Step by Step Solution
- Step 1: Write the proportion equation
212,321.22 : 292,969.84 = 121,659.74 : x - Step 2: Convert to fraction form
212,321.22/292,969.84 = 121,659.74/x - Step 3: Cross multiply
212,321.22x = 292,969.84 × 121,659.74 - Step 4: Simplify right side
212,321.22x = 35,642,634,562.24 - Step 5: Solve for x
x = 35,642,634,562.24/212,321.22 - Step 6: Final answer
x = 167,871.28
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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.