Finding the Fourth Proportional to 384,878.22, 531,122.77 and 215,128.14
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Solution
The fourth proportional to 384,878.22, 531,122.77 and 215,128.14 is: 296,871.70
Step by Step Solution
- Step 1: Write the proportion equation
384,878.22 : 531,122.77 = 215,128.14 : x - Step 2: Convert to fraction form
384,878.22/531,122.77 = 215,128.14/x - Step 3: Cross multiply
384,878.22x = 531,122.77 × 215,128.14 - Step 4: Simplify right side
384,878.22x = 114,259,453,083.93 - Step 5: Solve for x
x = 114,259,453,083.93/384,878.22 - Step 6: Final answer
x = 296,871.70
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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.