Finding the Fourth Proportional to 208,317.81, 287,478.81 and 112,824.63
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Solution
The fourth proportional to 208,317.81, 287,478.81 and 112,824.63 is: 155,698.12
Step by Step Solution
- Step 1: Write the proportion equation
208,317.81 : 287,478.81 = 112,824.63 : x - Step 2: Convert to fraction form
208,317.81/287,478.81 = 112,824.63/x - Step 3: Cross multiply
208,317.81x = 287,478.81 × 112,824.63 - Step 4: Simplify right side
208,317.81x = 32,434,690,371.09 - Step 5: Solve for x
x = 32,434,690,371.09/208,317.81 - Step 6: Final answer
x = 155,698.12
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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.