Finding the Fourth Proportional to 207,722,491.70, 311,583,737.55 and 86,538,197.30
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Solution
The fourth proportional to 207,722,491.70, 311,583,737.55 and 86,538,197.30 is: 129,807,295.95
Step by Step Solution
- Step 1: Write the proportion equation
207,722,491.70 : 311,583,737.55 = 86,538,197.30 : x - Step 2: Convert to fraction form
207,722,491.70/311,583,737.55 = 86,538,197.30/x - Step 3: Cross multiply
207,722,491.70x = 311,583,737.55 × 86,538,197.30 - Step 4: Simplify right side
207,722,491.70x = 26,963,894,955,573,320 - Step 5: Solve for x
x = 26,963,894,955,573,320/207,722,491.70 - Step 6: Final answer
x = 129,807,295.95
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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.