Finding the Fourth Proportional to 208,457.20, 287,672.70 and 122,393.80
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Solution
The fourth proportional to 208,457.20, 287,672.70 and 122,393.80 is: 168,904.48
Step by Step Solution
- Step 1: Write the proportion equation
208,457.20 : 287,672.70 = 122,393.80 : x - Step 2: Convert to fraction form
208,457.20/287,672.70 = 122,393.80/x - Step 3: Cross multiply
208,457.20x = 287,672.70 × 122,393.80 - Step 4: Simplify right side
208,457.20x = 35,209,354,909.26 - Step 5: Solve for x
x = 35,209,354,909.26/208,457.20 - Step 6: Final answer
x = 168,904.48
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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.