Finding the Fourth Proportional to 407,519.31, 611,311.37 and 127,038.99
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Solution
The fourth proportional to 407,519.31, 611,311.37 and 127,038.99 is: 190,568.59
Step by Step Solution
- Step 1: Write the proportion equation
407,519.31 : 611,311.37 = 127,038.99 : x - Step 2: Convert to fraction form
407,519.31/611,311.37 = 127,038.99/x - Step 3: Cross multiply
407,519.31x = 611,311.37 × 127,038.99 - Step 4: Simplify right side
407,519.31x = 77,660,378,385.12 - Step 5: Solve for x
x = 77,660,378,385.12/407,519.31 - Step 6: Final answer
x = 190,568.59
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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.