Finding the Fourth Proportional to 382,930.20, 528,429.42 and 213,160.68
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Solution
The fourth proportional to 382,930.20, 528,429.42 and 213,160.68 is: 294,153.80
Step by Step Solution
- Step 1: Write the proportion equation
382,930.20 : 528,429.42 = 213,160.68 : x - Step 2: Convert to fraction form
382,930.20/528,429.42 = 213,160.68/x - Step 3: Cross multiply
382,930.20x = 528,429.42 × 213,160.68 - Step 4: Simplify right side
382,930.20x = 112,640,374,499.21 - Step 5: Solve for x
x = 112,640,374,499.21/382,930.20 - Step 6: Final answer
x = 294,153.80
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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.