Finding the Fourth Proportional to 287,984.40, 397,418.64 and 160,659.99
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Solution
The fourth proportional to 287,984.40, 397,418.64 and 160,659.99 is: 221,710.88
Step by Step Solution
- Step 1: Write the proportion equation
287,984.40 : 397,418.64 = 160,659.99 : x - Step 2: Convert to fraction form
287,984.40/397,418.64 = 160,659.99/x - Step 3: Cross multiply
287,984.40x = 397,418.64 × 160,659.99 - Step 4: Simplify right side
287,984.40x = 63,849,274,728.21 - Step 5: Solve for x
x = 63,849,274,728.21/287,984.40 - Step 6: Final answer
x = 221,710.88
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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.