Finding the Fourth Proportional to 236,721.40, 326,670.44 and 129,291.84
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Solution
The fourth proportional to 236,721.40, 326,670.44 and 129,291.84 is: 178,419.96
Step by Step Solution
- Step 1: Write the proportion equation
236,721.40 : 326,670.44 = 129,291.84 : x - Step 2: Convert to fraction form
236,721.40/326,670.44 = 129,291.84/x - Step 3: Cross multiply
236,721.40x = 326,670.44 × 129,291.84 - Step 4: Simplify right side
236,721.40x = 42,235,822,261.21 - Step 5: Solve for x
x = 42,235,822,261.21/236,721.40 - Step 6: Final answer
x = 178,419.96
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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.