Finding the Fourth Proportional to 191,739,318.20, 287,608,977.30 and 133,068,231.80
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Solution
The fourth proportional to 191,739,318.20, 287,608,977.30 and 133,068,231.80 is: 199,602,347.70
Step by Step Solution
- Step 1: Write the proportion equation
191,739,318.20 : 287,608,977.30 = 133,068,231.80 : x - Step 2: Convert to fraction form
191,739,318.20/287,608,977.30 = 133,068,231.80/x - Step 3: Cross multiply
191,739,318.20x = 287,608,977.30 × 133,068,231.80 - Step 4: Simplify right side
191,739,318.20x = 38,271,618,059,117,336 - Step 5: Solve for x
x = 38,271,618,059,117,336/191,739,318.20 - Step 6: Final answer
x = 199,602,347.70
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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.