Finding the Fourth Proportional to 212,608,435.20, 318,912,652.80 and 115,610,611.20
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Solution
The fourth proportional to 212,608,435.20, 318,912,652.80 and 115,610,611.20 is: 173,415,916.80
Step by Step Solution
- Step 1: Write the proportion equation
212,608,435.20 : 318,912,652.80 = 115,610,611.20 : x - Step 2: Convert to fraction form
212,608,435.20/318,912,652.80 = 115,610,611.20/x - Step 3: Cross multiply
212,608,435.20x = 318,912,652.80 × 115,610,611.20 - Step 4: Simplify right side
212,608,435.20x = 36,869,686,709,621,392 - Step 5: Solve for x
x = 36,869,686,709,621,392/212,608,435.20 - Step 6: Final answer
x = 173,415,916.80
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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.