Finding the Fourth Proportional to 328,424.40, 492,766.20 and 128,710.80
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Solution
The fourth proportional to 328,424.40, 492,766.20 and 128,710.80 is: 193,116.99
Step by Step Solution
- Step 1: Write the proportion equation
328,424.40 : 492,766.20 = 128,710.80 : x - Step 2: Convert to fraction form
328,424.40/492,766.20 = 128,710.80/x - Step 3: Cross multiply
328,424.40x = 492,766.20 × 128,710.80 - Step 4: Simplify right side
328,424.40x = 63,424,331,814.96 - Step 5: Solve for x
x = 63,424,331,814.96/328,424.40 - Step 6: Final answer
x = 193,116.99
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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.