Finding the Fourth Proportional to 281,682.36, 388,731.08 and 154,356.84
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Solution
The fourth proportional to 281,682.36, 388,731.08 and 154,356.84 is: 213,017.60
Step by Step Solution
- Step 1: Write the proportion equation
281,682.36 : 388,731.08 = 154,356.84 : x - Step 2: Convert to fraction form
281,682.36/388,731.08 = 154,356.84/x - Step 3: Cross multiply
281,682.36x = 388,731.08 × 154,356.84 - Step 4: Simplify right side
281,682.36x = 60,003,301,118.59 - Step 5: Solve for x
x = 60,003,301,118.59/281,682.36 - Step 6: Final answer
x = 213,017.60
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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.