Finding the Fourth Proportional to 393,229.06, 542,650.90 and 221,146.99
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Solution
The fourth proportional to 393,229.06, 542,650.90 and 221,146.99 is: 305,179.92
Step by Step Solution
- Step 1: Write the proportion equation
393,229.06 : 542,650.90 = 221,146.99 : x - Step 2: Convert to fraction form
393,229.06/542,650.90 = 221,146.99/x - Step 3: Cross multiply
393,229.06x = 542,650.90 × 221,146.99 - Step 4: Simplify right side
393,229.06x = 120,005,613,155.79 - Step 5: Solve for x
x = 120,005,613,155.79/393,229.06 - Step 6: Final answer
x = 305,179.92
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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.