Finding the Fourth Proportional to 402,491.20, 603,809.70 and 202,307.80
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Solution
The fourth proportional to 402,491.20, 603,809.70 and 202,307.80 is: 303,498.34
Step by Step Solution
- Step 1: Write the proportion equation
402,491.20 : 603,809.70 = 202,307.80 : x - Step 2: Convert to fraction form
402,491.20/603,809.70 = 202,307.80/x - Step 3: Cross multiply
402,491.20x = 603,809.70 × 202,307.80 - Step 4: Simplify right side
402,491.20x = 122,155,412,025.66 - Step 5: Solve for x
x = 122,155,412,025.66/402,491.20 - Step 6: Final answer
x = 303,498.34
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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.