Finding the Fourth Proportional to 328,933.80, 493,400.70 and 79,615.80
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Solution
The fourth proportional to 328,933.80, 493,400.70 and 79,615.80 is: 119,423.70
Step by Step Solution
- Step 1: Write the proportion equation
328,933.80 : 493,400.70 = 79,615.80 : x - Step 2: Convert to fraction form
328,933.80/493,400.70 = 79,615.80/x - Step 3: Cross multiply
328,933.80x = 493,400.70 × 79,615.80 - Step 4: Simplify right side
328,933.80x = 39,282,491,451.06 - Step 5: Solve for x
x = 39,282,491,451.06/328,933.80 - Step 6: Final answer
x = 119,423.70
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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.