Finding the Fourth Proportional to 231,639.64, 319,692.84 and 129,703.96
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Solution
The fourth proportional to 231,639.64, 319,692.84 and 129,703.96 is: 179,008.34
Step by Step Solution
- Step 1: Write the proportion equation
231,639.64 : 319,692.84 = 129,703.96 : x - Step 2: Convert to fraction form
231,639.64/319,692.84 = 129,703.96/x - Step 3: Cross multiply
231,639.64x = 319,692.84 × 129,703.96 - Step 4: Simplify right side
231,639.64x = 41,465,427,331.65 - Step 5: Solve for x
x = 41,465,427,331.65/231,639.64 - Step 6: Final answer
x = 179,008.34
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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.