Finding the Fourth Proportional to 354,645.40, 531,968.10 and 221,675.80
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Solution
The fourth proportional to 354,645.40, 531,968.10 and 221,675.80 is: 332,513.70
Step by Step Solution
- Step 1: Write the proportion equation
354,645.40 : 531,968.10 = 221,675.80 : x - Step 2: Convert to fraction form
354,645.40/531,968.10 = 221,675.80/x - Step 3: Cross multiply
354,645.40x = 531,968.10 × 221,675.80 - Step 4: Simplify right side
354,645.40x = 117,924,454,141.98 - Step 5: Solve for x
x = 117,924,454,141.98/354,645.40 - Step 6: Final answer
x = 332,513.70
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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.