Finding the Fourth Proportional to 318,928.12, 440,120.82 and 175,688.08
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Solution
The fourth proportional to 318,928.12, 440,120.82 and 175,688.08 is: 242,449.56
Step by Step Solution
- Step 1: Write the proportion equation
318,928.12 : 440,120.82 = 175,688.08 : x - Step 2: Convert to fraction form
318,928.12/440,120.82 = 175,688.08/x - Step 3: Cross multiply
318,928.12x = 440,120.82 × 175,688.08 - Step 4: Simplify right side
318,928.12x = 77,323,981,833.83 - Step 5: Solve for x
x = 77,323,981,833.83/318,928.12 - Step 6: Final answer
x = 242,449.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.