Finding the Fourth Proportional to 492,747.70, 739,121.55 and 212,811.70
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Solution
The fourth proportional to 492,747.70, 739,121.55 and 212,811.70 is: 319,217.55
Step by Step Solution
- Step 1: Write the proportion equation
492,747.70 : 739,121.55 = 212,811.70 : x - Step 2: Convert to fraction form
492,747.70/739,121.55 = 212,811.70/x - Step 3: Cross multiply
492,747.70x = 739,121.55 × 212,811.70 - Step 4: Simplify right side
492,747.70x = 157,293,713,562.14 - Step 5: Solve for x
x = 157,293,713,562.14/492,747.70 - Step 6: Final answer
x = 319,217.55
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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.