Finding the Fourth Proportional to 247,261,331.20, 370,891,996.80 and 74,859,246.40
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Solution
The fourth proportional to 247,261,331.20, 370,891,996.80 and 74,859,246.40 is: 112,288,869.60
Step by Step Solution
- Step 1: Write the proportion equation
247,261,331.20 : 370,891,996.80 = 74,859,246.40 : x - Step 2: Convert to fraction form
247,261,331.20/370,891,996.80 = 74,859,246.40/x - Step 3: Cross multiply
247,261,331.20x = 370,891,996.80 × 74,859,246.40 - Step 4: Simplify right side
247,261,331.20x = 27,764,695,376,239,216 - Step 5: Solve for x
x = 27,764,695,376,239,216/247,261,331.20 - Step 6: Final answer
x = 112,288,869.60
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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.