Finding the Fourth Proportional to 505,153.20, 697,231.08 and 290,418.02
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Solution
The fourth proportional to 505,153.20, 697,231.08 and 290,418.02 is: 400,845.66
Step by Step Solution
- Step 1: Write the proportion equation
505,153.20 : 697,231.08 = 290,418.02 : x - Step 2: Convert to fraction form
505,153.20/697,231.08 = 290,418.02/x - Step 3: Cross multiply
505,153.20x = 697,231.08 × 290,418.02 - Step 4: Simplify right side
505,153.20x = 202,488,469,736.06 - Step 5: Solve for x
x = 202,488,469,736.06/505,153.20 - Step 6: Final answer
x = 400,845.66
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1.5x scale
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.