Finding the Fourth Proportional to 281,707.80, 388,747.98 and 154,381.08
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Solution
The fourth proportional to 281,707.80, 388,747.98 and 154,381.08 is: 213,041.08
Step by Step Solution
- Step 1: Write the proportion equation
281,707.80 : 388,747.98 = 154,381.08 : x - Step 2: Convert to fraction form
281,707.80/388,747.98 = 154,381.08/x - Step 3: Cross multiply
281,707.80x = 388,747.98 × 154,381.08 - Step 4: Simplify right side
281,707.80x = 60,015,333,000.22 - Step 5: Solve for x
x = 60,015,333,000.22/281,707.80 - Step 6: Final answer
x = 213,041.08
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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.