Finding the Fourth Proportional to 259,882.91, 389,979.88 and 112,138.91
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Solution
The fourth proportional to 259,882.91, 389,979.88 and 112,138.91 is: 168,275.47
Step by Step Solution
- Step 1: Write the proportion equation
259,882.91 : 389,979.88 = 112,138.91 : x - Step 2: Convert to fraction form
259,882.91/389,979.88 = 112,138.91/x - Step 3: Cross multiply
259,882.91x = 389,979.88 × 112,138.91 - Step 4: Simplify right side
259,882.91x = 43,731,918,665.13 - Step 5: Solve for x
x = 43,731,918,665.13/259,882.91 - Step 6: Final answer
x = 168,275.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.