Finding the Fourth Proportional to 387,564.22, 534,844.84 and 213,141.31
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Solution
The fourth proportional to 387,564.22, 534,844.84 and 213,141.31 is: 294,138.43
Step by Step Solution
- Step 1: Write the proportion equation
387,564.22 : 534,844.84 = 213,141.31 : x - Step 2: Convert to fraction form
387,564.22/534,844.84 = 213,141.31/x - Step 3: Cross multiply
387,564.22x = 534,844.84 × 213,141.31 - Step 4: Simplify right side
387,564.22x = 113,997,530,914.53 - Step 5: Solve for x
x = 113,997,530,914.53/387,564.22 - Step 6: Final answer
x = 294,138.43
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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.