Finding the Fourth Proportional to 253,798.74, 380,684.09 and 85,301.69
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Solution
The fourth proportional to 253,798.74, 380,684.09 and 85,301.69 is: 127,947.82
Step by Step Solution
- Step 1: Write the proportion equation
253,798.74 : 380,684.09 = 85,301.69 : x - Step 2: Convert to fraction form
253,798.74/380,684.09 = 85,301.69/x - Step 3: Cross multiply
253,798.74x = 380,684.09 × 85,301.69 - Step 4: Simplify right side
253,798.74x = 32,472,994,542.95 - Step 5: Solve for x
x = 32,472,994,542.95/253,798.74 - Step 6: Final answer
x = 127,947.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.