Finding the Fourth Proportional to 428,652.24, 642,896.36 and 215,361.05
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Solution
The fourth proportional to 428,652.24, 642,896.36 and 215,361.05 is: 323,000.37
Step by Step Solution
- Step 1: Write the proportion equation
428,652.24 : 642,896.36 = 215,361.05 : x - Step 2: Convert to fraction form
428,652.24/642,896.36 = 215,361.05/x - Step 3: Cross multiply
428,652.24x = 642,896.36 × 215,361.05 - Step 4: Simplify right side
428,652.24x = 138,454,831,647.10 - Step 5: Solve for x
x = 138,454,831,647.10/428,652.24 - Step 6: Final answer
x = 323,000.37
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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.