Finding the Fourth Proportional to 419,718.80, 579,195.06 and 228,728.09
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Solution
The fourth proportional to 419,718.80, 579,195.06 and 228,728.09 is: 315,635.56
Step by Step Solution
- Step 1: Write the proportion equation
419,718.80 : 579,195.06 = 228,728.09 : x - Step 2: Convert to fraction form
419,718.80/579,195.06 = 228,728.09/x - Step 3: Cross multiply
419,718.80x = 579,195.06 × 228,728.09 - Step 4: Simplify right side
419,718.80x = 132,478,179,811.24 - Step 5: Solve for x
x = 132,478,179,811.24/419,718.80 - Step 6: Final answer
x = 315,635.56
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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.