Finding the Fourth Proportional to 208,123.08, 287,209.84 and 112,629.80
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Solution
The fourth proportional to 208,123.08, 287,209.84 and 112,629.80 is: 155,429.12
Step by Step Solution
- Step 1: Write the proportion equation
208,123.08 : 287,209.84 = 112,629.80 : x - Step 2: Convert to fraction form
208,123.08/287,209.84 = 112,629.80/x - Step 3: Cross multiply
208,123.08x = 287,209.84 × 112,629.80 - Step 4: Simplify right side
208,123.08x = 32,348,386,837.23 - Step 5: Solve for x
x = 32,348,386,837.23/208,123.08 - Step 6: Final answer
x = 155,429.12
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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.