Finding the Fourth Proportional to 391,051.26, 539,650.73 and 212,203.26
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Solution
The fourth proportional to 391,051.26, 539,650.73 and 212,203.26 is: 292,840.49
Step by Step Solution
- Step 1: Write the proportion equation
391,051.26 : 539,650.73 = 212,203.26 : x - Step 2: Convert to fraction form
391,051.26/539,650.73 = 212,203.26/x - Step 3: Cross multiply
391,051.26x = 539,650.73 × 212,203.26 - Step 4: Simplify right side
391,051.26x = 114,515,644,167.38 - Step 5: Solve for x
x = 114,515,644,167.38/391,051.26 - Step 6: Final answer
x = 292,840.49
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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.