Finding the Fourth Proportional to 256,218.12, 382,645.05 and 218,374.92
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Solution
The fourth proportional to 256,218.12, 382,645.05 and 218,374.92 is: 326,128.70
Step by Step Solution
- Step 1: Write the proportion equation
256,218.12 : 382,645.05 = 218,374.92 : x - Step 2: Convert to fraction form
256,218.12/382,645.05 = 218,374.92/x - Step 3: Cross multiply
256,218.12x = 382,645.05 × 218,374.92 - Step 4: Simplify right side
256,218.12x = 83,560,082,182.15 - Step 5: Solve for x
x = 83,560,082,182.15/256,218.12 - Step 6: Final answer
x = 326,128.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.