Finding the Fourth Proportional to 328,778.36, 492,989.84 and 115,491.18
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Solution
The fourth proportional to 328,778.36, 492,989.84 and 115,491.18 is: 173,174.35
Step by Step Solution
- Step 1: Write the proportion equation
328,778.36 : 492,989.84 = 115,491.18 : x - Step 2: Convert to fraction form
328,778.36/492,989.84 = 115,491.18/x - Step 3: Cross multiply
328,778.36x = 492,989.84 × 115,491.18 - Step 4: Simplify right side
328,778.36x = 56,935,977,772.16 - Step 5: Solve for x
x = 56,935,977,772.16/328,778.36 - Step 6: Final answer
x = 173,174.35
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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.