Finding the Fourth Proportional to 205,207.70, 307,811.55 and 126,475.70
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Solution
The fourth proportional to 205,207.70, 307,811.55 and 126,475.70 is: 189,713.55
Step by Step Solution
- Step 1: Write the proportion equation
205,207.70 : 307,811.55 = 126,475.70 : x - Step 2: Convert to fraction form
205,207.70/307,811.55 = 126,475.70/x - Step 3: Cross multiply
205,207.70x = 307,811.55 × 126,475.70 - Step 4: Simplify right side
205,207.70x = 38,930,681,254.34 - Step 5: Solve for x
x = 38,930,681,254.34/205,207.70 - Step 6: Final answer
x = 189,713.55
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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.