Finding the Fourth Proportional to 328,520.80, 492,781.20 and 216,327.70
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Solution
The fourth proportional to 328,520.80, 492,781.20 and 216,327.70 is: 324,491.55
Step by Step Solution
- Step 1: Write the proportion equation
328,520.80 : 492,781.20 = 216,327.70 : x - Step 2: Convert to fraction form
328,520.80/492,781.20 = 216,327.70/x - Step 3: Cross multiply
328,520.80x = 492,781.20 × 216,327.70 - Step 4: Simplify right side
328,520.80x = 106,602,223,599.24 - Step 5: Solve for x
x = 106,602,223,599.24/328,520.80 - Step 6: Final answer
x = 324,491.55
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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.