Finding the Fourth Proportional to 313,630.20, 432,807.36 and 170,391.42
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Solution
The fourth proportional to 313,630.20, 432,807.36 and 170,391.42 is: 235,138.90
Step by Step Solution
- Step 1: Write the proportion equation
313,630.20 : 432,807.36 = 170,391.42 : x - Step 2: Convert to fraction form
313,630.20/432,807.36 = 170,391.42/x - Step 3: Cross multiply
313,630.20x = 432,807.36 × 170,391.42 - Step 4: Simplify right side
313,630.20x = 73,746,660,656.85 - Step 5: Solve for x
x = 73,746,660,656.85/313,630.20 - Step 6: Final answer
x = 235,138.90
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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.