Finding the Fourth Proportional to 251,471.21, 347,028.30 and 136,749.87
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Solution
The fourth proportional to 251,471.21, 347,028.30 and 136,749.87 is: 188,713.75
Step by Step Solution
- Step 1: Write the proportion equation
251,471.21 : 347,028.30 = 136,749.87 : x - Step 2: Convert to fraction form
251,471.21/347,028.30 = 136,749.87/x - Step 3: Cross multiply
251,471.21x = 347,028.30 × 136,749.87 - Step 4: Simplify right side
251,471.21x = 47,456,074,911.32 - Step 5: Solve for x
x = 47,456,074,911.32/251,471.21 - Step 6: Final answer
x = 188,713.75
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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.