Finding the Fourth Proportional to 208,358.09, 287,528.25 and 122,315.70
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Solution
The fourth proportional to 208,358.09, 287,528.25 and 122,315.70 is: 168,792.20
Step by Step Solution
- Step 1: Write the proportion equation
208,358.09 : 287,528.25 = 122,315.70 : x - Step 2: Convert to fraction form
208,358.09/287,528.25 = 122,315.70/x - Step 3: Cross multiply
208,358.09x = 287,528.25 × 122,315.70 - Step 4: Simplify right side
208,358.09x = 35,169,219,168.53 - Step 5: Solve for x
x = 35,169,219,168.53/208,358.09 - Step 6: Final answer
x = 168,792.20
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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.