Finding the Fourth Proportional to 242,939.56, 335,257.12 and 135,506.84
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Solution
The fourth proportional to 242,939.56, 335,257.12 and 135,506.84 is: 186,999.73
Step by Step Solution
- Step 1: Write the proportion equation
242,939.56 : 335,257.12 = 135,506.84 : x - Step 2: Convert to fraction form
242,939.56/335,257.12 = 135,506.84/x - Step 3: Cross multiply
242,939.56x = 335,257.12 × 135,506.84 - Step 4: Simplify right side
242,939.56x = 45,429,632,918.70 - Step 5: Solve for x
x = 45,429,632,918.70/242,939.56 - Step 6: Final answer
x = 186,999.73
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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.