Finding the Fourth Proportional to 318,145.20, 477,206.84 and 81,489.92
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Solution
The fourth proportional to 318,145.20, 477,206.84 and 81,489.92 is: 122,232.07
Step by Step Solution
- Step 1: Write the proportion equation
318,145.20 : 477,206.84 = 81,489.92 : x - Step 2: Convert to fraction form
318,145.20/477,206.84 = 81,489.92/x - Step 3: Cross multiply
318,145.20x = 477,206.84 × 81,489.92 - Step 4: Simplify right side
318,145.20x = 38,887,547,215.05 - Step 5: Solve for x
x = 38,887,547,215.05/318,145.20 - Step 6: Final answer
x = 122,232.07
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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.