Finding the Fourth Proportional to 242,706.21, 334,936.12 and 135,283.05
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Solution
The fourth proportional to 242,706.21, 334,936.12 and 135,283.05 is: 186,691.47
Step by Step Solution
- Step 1: Write the proportion equation
242,706.21 : 334,936.12 = 135,283.05 : x - Step 2: Convert to fraction form
242,706.21/334,936.12 = 135,283.05/x - Step 3: Cross multiply
242,706.21x = 334,936.12 × 135,283.05 - Step 4: Simplify right side
242,706.21x = 45,311,179,868.77 - Step 5: Solve for x
x = 45,311,179,868.77/242,706.21 - Step 6: Final answer
x = 186,691.47
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1.5x scale
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.