Finding the Fourth Proportional to 402,543.12, 555,514.60 and 221,274.80
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Solution
The fourth proportional to 402,543.12, 555,514.60 and 221,274.80 is: 305,362.02
Step by Step Solution
- Step 1: Write the proportion equation
402,543.12 : 555,514.60 = 221,274.80 : x - Step 2: Convert to fraction form
402,543.12/555,514.60 = 221,274.80/x - Step 3: Cross multiply
402,543.12x = 555,514.60 × 221,274.80 - Step 4: Simplify right side
402,543.12x = 122,921,382,012.08 - Step 5: Solve for x
x = 122,921,382,012.08/402,543.12 - Step 6: Final answer
x = 305,362.02
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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.