Finding the Fourth Proportional to 263,813,221.80, 395,719,832.70 and 127,764,325.80
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Solution
The fourth proportional to 263,813,221.80, 395,719,832.70 and 127,764,325.80 is: 191,646,488.70
Step by Step Solution
- Step 1: Write the proportion equation
263,813,221.80 : 395,719,832.70 = 127,764,325.80 : x - Step 2: Convert to fraction form
263,813,221.80/395,719,832.70 = 127,764,325.80/x - Step 3: Cross multiply
263,813,221.80x = 395,719,832.70 × 127,764,325.80 - Step 4: Simplify right side
263,813,221.80x = 50,558,877,630,604,288 - Step 5: Solve for x
x = 50,558,877,630,604,288/263,813,221.80 - Step 6: Final answer
x = 191,646,488.70
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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.