Finding the Fourth Proportional to 209,722.21, 289,423.87 and 119,075.18
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Solution
The fourth proportional to 209,722.21, 289,423.87 and 119,075.18 is: 164,327.84
Step by Step Solution
- Step 1: Write the proportion equation
209,722.21 : 289,423.87 = 119,075.18 : x - Step 2: Convert to fraction form
209,722.21/289,423.87 = 119,075.18/x - Step 3: Cross multiply
209,722.21x = 289,423.87 × 119,075.18 - Step 4: Simplify right side
209,722.21x = 34,463,197,671.74 - Step 5: Solve for x
x = 34,463,197,671.74/209,722.21 - Step 6: Final answer
x = 164,327.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.