Finding the Fourth Proportional to 231,790.68, 319,867.65 and 129,815.73
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Solution
The fourth proportional to 231,790.68, 319,867.65 and 129,815.73 is: 179,143.75
Step by Step Solution
- Step 1: Write the proportion equation
231,790.68 : 319,867.65 = 129,815.73 : x - Step 2: Convert to fraction form
231,790.68/319,867.65 = 129,815.73/x - Step 3: Cross multiply
231,790.68x = 319,867.65 × 129,815.73 - Step 4: Simplify right side
231,790.68x = 41,523,852,488.13 - Step 5: Solve for x
x = 41,523,852,488.13/231,790.68 - Step 6: Final answer
x = 179,143.75
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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.