Finding the Fourth Proportional to 248,000.14, 342,218.28 and 137,621.62
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Solution
The fourth proportional to 248,000.14, 342,218.28 and 137,621.62 is: 189,905.68
Step by Step Solution
- Step 1: Write the proportion equation
248,000.14 : 342,218.28 = 137,621.62 : x - Step 2: Convert to fraction form
248,000.14/342,218.28 = 137,621.62/x - Step 3: Cross multiply
248,000.14x = 342,218.28 × 137,621.62 - Step 4: Simplify right side
248,000.14x = 47,096,634,087.21 - Step 5: Solve for x
x = 47,096,634,087.21/248,000.14 - Step 6: Final answer
x = 189,905.68
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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.