Finding the Fourth Proportional to 207,216,315.12, 310,799,715.84 and 161,204,109.60
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Solution
The fourth proportional to 207,216,315.12, 310,799,715.84 and 161,204,109.60 is: 241,786,904.80
Step by Step Solution
- Step 1: Write the proportion equation
207,216,315.12 : 310,799,715.84 = 161,204,109.60 : x - Step 2: Convert to fraction form
207,216,315.12/310,799,715.84 = 161,204,109.60/x - Step 3: Cross multiply
207,216,315.12x = 310,799,715.84 × 161,204,109.60 - Step 4: Simplify right side
207,216,315.12x = 50,102,191,455,920,208 - Step 5: Solve for x
x = 50,102,191,455,920,208/207,216,315.12 - Step 6: Final answer
x = 241,786,904.80
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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.