Finding the Fourth Proportional to 428,184.71, 590,206.22 and 290,318.99
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Solution
The fourth proportional to 428,184.71, 590,206.22 and 290,318.99 is: 400,173.27
Step by Step Solution
- Step 1: Write the proportion equation
428,184.71 : 590,206.22 = 290,318.99 : x - Step 2: Convert to fraction form
428,184.71/590,206.22 = 290,318.99/x - Step 3: Cross multiply
428,184.71x = 590,206.22 × 290,318.99 - Step 4: Simplify right side
428,184.71x = 171,348,071,456.88 - Step 5: Solve for x
x = 171,348,071,456.88/428,184.71 - Step 6: Final answer
x = 400,173.27
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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.