Finding the Fourth Proportional to 412,912.10, 619,368.15 and 132,457.70
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Solution
The fourth proportional to 412,912.10, 619,368.15 and 132,457.70 is: 198,686.55
Step by Step Solution
- Step 1: Write the proportion equation
412,912.10 : 619,368.15 = 132,457.70 : x - Step 2: Convert to fraction form
412,912.10/619,368.15 = 132,457.70/x - Step 3: Cross multiply
412,912.10x = 619,368.15 × 132,457.70 - Step 4: Simplify right side
412,912.10x = 82,040,080,602.26 - Step 5: Solve for x
x = 82,040,080,602.26/412,912.10 - Step 6: Final answer
x = 198,686.55
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Similar ratio
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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.