Finding the Fourth Proportional to 236,789.32, 326,769.60 and 129,361.18
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Solution
The fourth proportional to 236,789.32, 326,769.60 and 129,361.18 is: 178,518.61
Step by Step Solution
- Step 1: Write the proportion equation
236,789.32 : 326,769.60 = 129,361.18 : x - Step 2: Convert to fraction form
236,789.32/326,769.60 = 129,361.18/x - Step 3: Cross multiply
236,789.32x = 326,769.60 × 129,361.18 - Step 4: Simplify right side
236,789.32x = 42,271,301,044.13 - Step 5: Solve for x
x = 42,271,301,044.13/236,789.32 - Step 6: Final answer
x = 178,518.61
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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.