Finding the Fourth Proportional to 521,319.68, 782,047.20 and 147,351.68
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Solution
The fourth proportional to 521,319.68, 782,047.20 and 147,351.68 is: 221,046.65
Step by Step Solution
- Step 1: Write the proportion equation
521,319.68 : 782,047.20 = 147,351.68 : x - Step 2: Convert to fraction form
521,319.68/782,047.20 = 147,351.68/x - Step 3: Cross multiply
521,319.68x = 782,047.20 × 147,351.68 - Step 4: Simplify right side
521,319.68x = 115,235,968,759.30 - Step 5: Solve for x
x = 115,235,968,759.30/521,319.68 - Step 6: Final answer
x = 221,046.65
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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.