Finding the Fourth Proportional to 238,365.49, 328,946.80 and 129,471.95
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Solution
The fourth proportional to 238,365.49, 328,946.80 and 129,471.95 is: 178,672.61
Step by Step Solution
- Step 1: Write the proportion equation
238,365.49 : 328,946.80 = 129,471.95 : x - Step 2: Convert to fraction form
238,365.49/328,946.80 = 129,471.95/x - Step 3: Cross multiply
238,365.49x = 328,946.80 × 129,471.95 - Step 4: Simplify right side
238,365.49x = 42,589,384,019.57 - Step 5: Solve for x
x = 42,589,384,019.57/238,365.49 - Step 6: Final answer
x = 178,672.61
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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.