Finding the Fourth Proportional to 218,949.21, 328,421.84 and 69,189.53
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Solution
The fourth proportional to 218,949.21, 328,421.84 and 69,189.53 is: 103,783.66
Step by Step Solution
- Step 1: Write the proportion equation
218,949.21 : 328,421.84 = 69,189.53 : x - Step 2: Convert to fraction form
218,949.21/328,421.84 = 69,189.53/x - Step 3: Cross multiply
218,949.21x = 328,421.84 × 69,189.53 - Step 4: Simplify right side
218,949.21x = 22,723,350,763.28 - Step 5: Solve for x
x = 22,723,350,763.28/218,949.21 - Step 6: Final answer
x = 103,783.66
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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.