Finding the Fourth Proportional to 239,447.12, 330,439.36 and 132,021.40
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Solution
The fourth proportional to 239,447.12, 330,439.36 and 132,021.40 is: 182,190.82
Step by Step Solution
- Step 1: Write the proportion equation
239,447.12 : 330,439.36 = 132,021.40 : x - Step 2: Convert to fraction form
239,447.12/330,439.36 = 132,021.40/x - Step 3: Cross multiply
239,447.12x = 330,439.36 × 132,021.40 - Step 4: Simplify right side
239,447.12x = 43,625,066,922.30 - Step 5: Solve for x
x = 43,625,066,922.30/239,447.12 - Step 6: Final answer
x = 182,190.82
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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.