Finding the Fourth Proportional to 445,907.80, 668,861.70 and 209,711.80
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Solution
The fourth proportional to 445,907.80, 668,861.70 and 209,711.80 is: 314,567.70
Step by Step Solution
- Step 1: Write the proportion equation
445,907.80 : 668,861.70 = 209,711.80 : x - Step 2: Convert to fraction form
445,907.80/668,861.70 = 209,711.80/x - Step 3: Cross multiply
445,907.80x = 668,861.70 × 209,711.80 - Step 4: Simplify right side
445,907.80x = 140,268,191,058.06 - Step 5: Solve for x
x = 140,268,191,058.06/445,907.80 - Step 6: Final answer
x = 314,567.70
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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.