Finding the Fourth Proportional to 371,998.80, 557,998.20 and 135,349.20
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Solution
The fourth proportional to 371,998.80, 557,998.20 and 135,349.20 is: 203,023.80
Step by Step Solution
- Step 1: Write the proportion equation
371,998.80 : 557,998.20 = 135,349.20 : x - Step 2: Convert to fraction form
371,998.80/557,998.20 = 135,349.20/x - Step 3: Cross multiply
371,998.80x = 557,998.20 × 135,349.20 - Step 4: Simplify right side
371,998.80x = 75,524,609,971.44 - Step 5: Solve for x
x = 75,524,609,971.44/371,998.80 - Step 6: Final answer
x = 203,023.80
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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.