Finding the Fourth Proportional to 272,618,905.28, 408,784,868.84 and 186,381,974.21
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Solution
The fourth proportional to 272,618,905.28, 408,784,868.84 and 186,381,974.21 is: 279,474,861.81
Step by Step Solution
- Step 1: Write the proportion equation
272,618,905.28 : 408,784,868.84 = 186,381,974.21 : x - Step 2: Convert to fraction form
272,618,905.28/408,784,868.84 = 186,381,974.21/x - Step 3: Cross multiply
272,618,905.28x = 408,784,868.84 × 186,381,974.21 - Step 4: Simplify right side
272,618,905.28x = 76,190,130,878,599,280 - Step 5: Solve for x
x = 76,190,130,878,599,280/272,618,905.28 - Step 6: Final answer
x = 279,474,861.81
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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.