Finding the Fourth Proportional to 208,116.59, 287,201.64 and 112,623.26
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Solution
The fourth proportional to 208,116.59, 287,201.64 and 112,623.26 is: 155,420.50
Step by Step Solution
- Step 1: Write the proportion equation
208,116.59 : 287,201.64 = 112,623.26 : x - Step 2: Convert to fraction form
208,116.59/287,201.64 = 112,623.26/x - Step 3: Cross multiply
208,116.59x = 287,201.64 × 112,623.26 - Step 4: Simplify right side
208,116.59x = 32,345,583,538.14 - Step 5: Solve for x
x = 32,345,583,538.14/208,116.59 - Step 6: Final answer
x = 155,420.50
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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.