Finding the Fourth Proportional to 280,244.79, 386,636.76 and 215,733.75
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Solution
The fourth proportional to 280,244.79, 386,636.76 and 215,733.75 is: 297,634.79
Step by Step Solution
- Step 1: Write the proportion equation
280,244.79 : 386,636.76 = 215,733.75 : x - Step 2: Convert to fraction form
280,244.79/386,636.76 = 215,733.75/x - Step 3: Cross multiply
280,244.79x = 386,636.76 × 215,733.75 - Step 4: Simplify right side
280,244.79x = 83,410,598,122.65 - Step 5: Solve for x
x = 83,410,598,122.65/280,244.79 - Step 6: Final answer
x = 297,634.79
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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.