Finding the Fourth Proportional to 238,213.80, 357,320.70 and 120,115.80
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Solution
The fourth proportional to 238,213.80, 357,320.70 and 120,115.80 is: 180,173.70
Step by Step Solution
- Step 1: Write the proportion equation
238,213.80 : 357,320.70 = 120,115.80 : x - Step 2: Convert to fraction form
238,213.80/357,320.70 = 120,115.80/x - Step 3: Cross multiply
238,213.80x = 357,320.70 × 120,115.80 - Step 4: Simplify right side
238,213.80x = 42,919,861,737.06 - Step 5: Solve for x
x = 42,919,861,737.06/238,213.80 - Step 6: Final answer
x = 180,173.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.