Finding the Fourth Proportional to 245,563.14, 338,873.70 and 138,133.20
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Solution
The fourth proportional to 245,563.14, 338,873.70 and 138,133.20 is: 190,621.88
Step by Step Solution
- Step 1: Write the proportion equation
245,563.14 : 338,873.70 = 138,133.20 : x - Step 2: Convert to fraction form
245,563.14/338,873.70 = 138,133.20/x - Step 3: Cross multiply
245,563.14x = 338,873.70 × 138,133.20 - Step 4: Simplify right side
245,563.14x = 46,809,708,576.84 - Step 5: Solve for x
x = 46,809,708,576.84/245,563.14 - Step 6: Final answer
x = 190,621.88
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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.