Finding the Fourth Proportional to 236,720.26, 326,680.05 and 129,289.15
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Solution
The fourth proportional to 236,720.26, 326,680.05 and 129,289.15 is: 178,422.35
Step by Step Solution
- Step 1: Write the proportion equation
236,720.26 : 326,680.05 = 129,289.15 : x - Step 2: Convert to fraction form
236,720.26/326,680.05 = 129,289.15/x - Step 3: Cross multiply
236,720.26x = 326,680.05 × 129,289.15 - Step 4: Simplify right side
236,720.26x = 42,236,185,986.46 - Step 5: Solve for x
x = 42,236,185,986.46/236,720.26 - Step 6: Final answer
x = 178,422.35
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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.