Finding the Fourth Proportional to 231,649.56, 319,653.36 and 129,669.12
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Solution
The fourth proportional to 231,649.56, 319,653.36 and 129,669.12 is: 178,930.49
Step by Step Solution
- Step 1: Write the proportion equation
231,649.56 : 319,653.36 = 129,669.12 : x - Step 2: Convert to fraction form
231,649.56/319,653.36 = 129,669.12/x - Step 3: Cross multiply
231,649.56x = 319,653.36 × 129,669.12 - Step 4: Simplify right side
231,649.56x = 41,449,169,896.24 - Step 5: Solve for x
x = 41,449,169,896.24/231,649.56 - Step 6: Final answer
x = 178,930.49
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1.5x scale
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.