Finding the Fourth Proportional to 221,268,763.80, 331,903,145.70 and 119,232,091.80
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Solution
The fourth proportional to 221,268,763.80, 331,903,145.70 and 119,232,091.80 is: 178,848,137.70
Step by Step Solution
- Step 1: Write the proportion equation
221,268,763.80 : 331,903,145.70 = 119,232,091.80 : x - Step 2: Convert to fraction form
221,268,763.80/331,903,145.70 = 119,232,091.80/x - Step 3: Cross multiply
221,268,763.80x = 331,903,145.70 × 119,232,091.80 - Step 4: Simplify right side
221,268,763.80x = 39,573,506,336,811,176 - Step 5: Solve for x
x = 39,573,506,336,811,176/221,268,763.80 - Step 6: Final answer
x = 178,848,137.70
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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.