Finding the Fourth Proportional to 208,913.58, 288,300.74 and 113,420.28
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Solution
The fourth proportional to 208,913.58, 288,300.74 and 113,420.28 is: 156,519.99
Step by Step Solution
- Step 1: Write the proportion equation
208,913.58 : 288,300.74 = 113,420.28 : x - Step 2: Convert to fraction form
208,913.58/288,300.74 = 113,420.28/x - Step 3: Cross multiply
208,913.58x = 288,300.74 × 113,420.28 - Step 4: Simplify right side
208,913.58x = 32,699,151,169.03 - Step 5: Solve for x
x = 32,699,151,169.03/208,913.58 - Step 6: Final answer
x = 156,519.99
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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.