Finding the Fourth Proportional to 250,311.43, 345,438.57 and 137,134.18
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Solution
The fourth proportional to 250,311.43, 345,438.57 and 137,134.18 is: 189,249.99
Step by Step Solution
- Step 1: Write the proportion equation
250,311.43 : 345,438.57 = 137,134.18 : x - Step 2: Convert to fraction form
250,311.43/345,438.57 = 137,134.18/x - Step 3: Cross multiply
250,311.43x = 345,438.57 × 137,134.18 - Step 4: Simplify right side
250,311.43x = 47,371,435,037.32 - Step 5: Solve for x
x = 47,371,435,037.32/250,311.43 - Step 6: Final answer
x = 189,249.99
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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.