Finding the Fourth Proportional to 461,315.70, 691,973.55 and 128,891.70
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Solution
The fourth proportional to 461,315.70, 691,973.55 and 128,891.70 is: 193,337.55
Step by Step Solution
- Step 1: Write the proportion equation
461,315.70 : 691,973.55 = 128,891.70 : x - Step 2: Convert to fraction form
461,315.70/691,973.55 = 128,891.70/x - Step 3: Cross multiply
461,315.70x = 691,973.55 × 128,891.70 - Step 4: Simplify right side
461,315.70x = 89,189,647,214.54 - Step 5: Solve for x
x = 89,189,647,214.54/461,315.70 - Step 6: Final answer
x = 193,337.55
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Similar ratio
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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.