Finding the Fourth Proportional to 312,138.30, 468,207.45 and 170,420.70
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Solution
The fourth proportional to 312,138.30, 468,207.45 and 170,420.70 is: 255,631.05
Step by Step Solution
- Step 1: Write the proportion equation
312,138.30 : 468,207.45 = 170,420.70 : x - Step 2: Convert to fraction form
312,138.30/468,207.45 = 170,420.70/x - Step 3: Cross multiply
312,138.30x = 468,207.45 × 170,420.70 - Step 4: Simplify right side
312,138.30x = 79,792,241,374.22 - Step 5: Solve for x
x = 79,792,241,374.22/312,138.30 - Step 6: Final answer
x = 255,631.05
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1.5x scale
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.