Finding the Fourth Proportional to 418,721.09, 628,085.52 and 119,201.63
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Solution
The fourth proportional to 418,721.09, 628,085.52 and 119,201.63 is: 178,803.55
Step by Step Solution
- Step 1: Write the proportion equation
418,721.09 : 628,085.52 = 119,201.63 : x - Step 2: Convert to fraction form
418,721.09/628,085.52 = 119,201.63/x - Step 3: Cross multiply
418,721.09x = 628,085.52 × 119,201.63 - Step 4: Simplify right side
418,721.09x = 74,868,814,622.97 - Step 5: Solve for x
x = 74,868,814,622.97/418,721.09 - Step 6: Final answer
x = 178,803.55
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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.