Finding the Fourth Proportional to 397,192.78, 548,126.41 and 215,904.71
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Solution
The fourth proportional to 397,192.78, 548,126.41 and 215,904.71 is: 297,948.70
Step by Step Solution
- Step 1: Write the proportion equation
397,192.78 : 548,126.41 = 215,904.71 : x - Step 2: Convert to fraction form
397,192.78/548,126.41 = 215,904.71/x - Step 3: Cross multiply
397,192.78x = 548,126.41 × 215,904.71 - Step 4: Simplify right side
397,192.78x = 118,343,073,594.39 - Step 5: Solve for x
x = 118,343,073,594.39/397,192.78 - Step 6: Final answer
x = 297,948.70
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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.