Finding the Fourth Proportional to 221,668.10, 332,502.15 and 128,125.70
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Solution
The fourth proportional to 221,668.10, 332,502.15 and 128,125.70 is: 192,188.55
Step by Step Solution
- Step 1: Write the proportion equation
221,668.10 : 332,502.15 = 128,125.70 : x - Step 2: Convert to fraction form
221,668.10/332,502.15 = 128,125.70/x - Step 3: Cross multiply
221,668.10x = 332,502.15 × 128,125.70 - Step 4: Simplify right side
221,668.10x = 42,602,070,720.26 - Step 5: Solve for x
x = 42,602,070,720.26/221,668.10 - Step 6: Final answer
x = 192,188.55
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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.