Finding the Fourth Proportional to 328,781.12, 492,775.11 and 160,048.53
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Solution
The fourth proportional to 328,781.12, 492,775.11 and 160,048.53 is: 239,879.75
Step by Step Solution
- Step 1: Write the proportion equation
328,781.12 : 492,775.11 = 160,048.53 : x - Step 2: Convert to fraction form
328,781.12/492,775.11 = 160,048.53/x - Step 3: Cross multiply
328,781.12x = 492,775.11 × 160,048.53 - Step 4: Simplify right side
328,781.12x = 78,867,931,976.09 - Step 5: Solve for x
x = 78,867,931,976.09/328,781.12 - Step 6: Final answer
x = 239,879.75
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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.