Finding the Fourth Proportional to 312,970.10, 431,920.16 and 177,004.08
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Solution
The fourth proportional to 312,970.10, 431,920.16 and 177,004.08 is: 244,277.75
Step by Step Solution
- Step 1: Write the proportion equation
312,970.10 : 431,920.16 = 177,004.08 : x - Step 2: Convert to fraction form
312,970.10/431,920.16 = 177,004.08/x - Step 3: Cross multiply
312,970.10x = 431,920.16 × 177,004.08 - Step 4: Simplify right side
312,970.10x = 76,451,630,554.25 - Step 5: Solve for x
x = 76,451,630,554.25/312,970.10 - Step 6: Final answer
x = 244,277.75
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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.