Finding the Fourth Proportional to 206,989,689.80, 310,484,534.70 and 194,235,105.80
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Solution
The fourth proportional to 206,989,689.80, 310,484,534.70 and 194,235,105.80 is: 291,352,658.70
Step by Step Solution
- Step 1: Write the proportion equation
206,989,689.80 : 310,484,534.70 = 194,235,105.80 : x - Step 2: Convert to fraction form
206,989,689.80/310,484,534.70 = 194,235,105.80/x - Step 3: Cross multiply
206,989,689.80x = 310,484,534.70 × 194,235,105.80 - Step 4: Simplify right side
206,989,689.80x = 60,306,996,446,718,272 - Step 5: Solve for x
x = 60,306,996,446,718,272/206,989,689.80 - Step 6: Final answer
x = 291,352,658.70
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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.