Finding the Fourth Proportional to 656,135.20, 984,202.80 and 212,903.20
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Solution
The fourth proportional to 656,135.20, 984,202.80 and 212,903.20 is: 319,354.80
Step by Step Solution
- Step 1: Write the proportion equation
656,135.20 : 984,202.80 = 212,903.20 : x - Step 2: Convert to fraction form
656,135.20/984,202.80 = 212,903.20/x - Step 3: Cross multiply
656,135.20x = 984,202.80 × 212,903.20 - Step 4: Simplify right side
656,135.20x = 209,539,925,568.96 - Step 5: Solve for x
x = 209,539,925,568.96/656,135.20 - Step 6: Final answer
x = 319,354.80
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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.