Finding the Fourth Proportional to 280,229.99, 386,725.91 and 159,388.65
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Solution
The fourth proportional to 280,229.99, 386,725.91 and 159,388.65 is: 219,961.19
Step by Step Solution
- Step 1: Write the proportion equation
280,229.99 : 386,725.91 = 159,388.65 : x - Step 2: Convert to fraction form
280,229.99/386,725.91 = 159,388.65/x - Step 3: Cross multiply
280,229.99x = 386,725.91 × 159,388.65 - Step 4: Simplify right side
280,229.99x = 61,639,719,917.98 - Step 5: Solve for x
x = 61,639,719,917.98/280,229.99 - Step 6: Final answer
x = 219,961.19
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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.