Finding the Fourth Proportional to 428,249.98, 642,375.48 and 128,730.58
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Solution
The fourth proportional to 428,249.98, 642,375.48 and 128,730.58 is: 193,096.02
Step by Step Solution
- Step 1: Write the proportion equation
428,249.98 : 642,375.48 = 128,730.58 : x - Step 2: Convert to fraction form
428,249.98/642,375.48 = 128,730.58/x - Step 3: Cross multiply
428,249.98x = 642,375.48 × 128,730.58 - Step 4: Simplify right side
428,249.98x = 82,693,368,118.18 - Step 5: Solve for x
x = 82,693,368,118.18/428,249.98 - Step 6: Final answer
x = 193,096.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.