Finding the Fourth Proportional to 274,781.55, 412,231.14 and 85,237.80
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Solution
The fourth proportional to 274,781.55, 412,231.14 and 85,237.80 is: 127,874.94
Step by Step Solution
- Step 1: Write the proportion equation
274,781.55 : 412,231.14 = 85,237.80 : x - Step 2: Convert to fraction form
274,781.55/412,231.14 = 85,237.80/x - Step 3: Cross multiply
274,781.55x = 412,231.14 × 85,237.80 - Step 4: Simplify right side
274,781.55x = 35,137,675,465.09 - Step 5: Solve for x
x = 35,137,675,465.09/274,781.55 - Step 6: Final answer
x = 127,874.94
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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.