Finding the Fourth Proportional to 208,440.13, 287,648.37 and 112,946.99
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Solution
The fourth proportional to 208,440.13, 287,648.37 and 112,946.99 is: 155,867.39
Step by Step Solution
- Step 1: Write the proportion equation
208,440.13 : 287,648.37 = 112,946.99 : x - Step 2: Convert to fraction form
208,440.13/287,648.37 = 112,946.99/x - Step 3: Cross multiply
208,440.13x = 287,648.37 × 112,946.99 - Step 4: Simplify right side
208,440.13x = 32,489,017,569.91 - Step 5: Solve for x
x = 32,489,017,569.91/208,440.13 - Step 6: Final answer
x = 155,867.39
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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.