Finding the Fourth Proportional to 280,232.97, 386,620.46 and 215,721.94
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Solution
The fourth proportional to 280,232.97, 386,620.46 and 215,721.94 is: 297,618.50
Step by Step Solution
- Step 1: Write the proportion equation
280,232.97 : 386,620.46 = 215,721.94 : x - Step 2: Convert to fraction form
280,232.97/386,620.46 = 215,721.94/x - Step 3: Cross multiply
280,232.97x = 386,620.46 × 215,721.94 - Step 4: Simplify right side
280,232.97x = 83,402,516,697.47 - Step 5: Solve for x
x = 83,402,516,697.47/280,232.97 - Step 6: Final answer
x = 297,618.50
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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.