Finding the Fourth Proportional to 212,536,391.20, 318,804,586.80 and 212,536,391.20
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Solution
The fourth proportional to 212,536,391.20, 318,804,586.80 and 212,536,391.20 is: 318,804,586.80
Step by Step Solution
- Step 1: Write the proportion equation
212,536,391.20 : 318,804,586.80 = 212,536,391.20 : x - Step 2: Convert to fraction form
212,536,391.20/318,804,586.80 = 212,536,391.20/x - Step 3: Cross multiply
212,536,391.20x = 318,804,586.80 × 212,536,391.20 - Step 4: Simplify right side
212,536,391.20x = 67,757,576,376,479,152 - Step 5: Solve for x
x = 67,757,576,376,479,152/212,536,391.20 - Step 6: Final answer
x = 318,804,586.80
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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.