Finding the Fourth Proportional to 231,305.86, 319,202.61 and 129,335.02
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Solution
The fourth proportional to 231,305.86, 319,202.61 and 129,335.02 is: 178,482.62
Step by Step Solution
- Step 1: Write the proportion equation
231,305.86 : 319,202.61 = 129,335.02 : x - Step 2: Convert to fraction form
231,305.86/319,202.61 = 129,335.02/x - Step 3: Cross multiply
231,305.86x = 319,202.61 × 129,335.02 - Step 4: Simplify right side
231,305.86x = 41,284,075,948.40 - Step 5: Solve for x
x = 41,284,075,948.40/231,305.86 - Step 6: Final answer
x = 178,482.62
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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.