Finding the Fourth Proportional to 312,020.12, 430,585.08 and 176,055.08
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Solution
The fourth proportional to 312,020.12, 430,585.08 and 176,055.08 is: 242,954.50
Step by Step Solution
- Step 1: Write the proportion equation
312,020.12 : 430,585.08 = 176,055.08 : x - Step 2: Convert to fraction form
312,020.12/430,585.08 = 176,055.08/x - Step 3: Cross multiply
312,020.12x = 430,585.08 × 176,055.08 - Step 4: Simplify right side
312,020.12x = 75,806,690,706.21 - Step 5: Solve for x
x = 75,806,690,706.21/312,020.12 - Step 6: Final answer
x = 242,954.50
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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.