Finding the Fourth Proportional to 318,018.69, 477,025.61 and 81,360.99
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Solution
The fourth proportional to 318,018.69, 477,025.61 and 81,360.99 is: 122,040.86
Step by Step Solution
- Step 1: Write the proportion equation
318,018.69 : 477,025.61 = 81,360.99 : x - Step 2: Convert to fraction form
318,018.69/477,025.61 = 81,360.99/x - Step 3: Cross multiply
318,018.69x = 477,025.61 × 81,360.99 - Step 4: Simplify right side
318,018.69x = 38,811,275,478.15 - Step 5: Solve for x
x = 38,811,275,478.15/318,018.69 - Step 6: Final answer
x = 122,040.86
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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.