Finding the Fourth Proportional to 342,071.70, 513,107.55 and 155,447.70
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Solution
The fourth proportional to 342,071.70, 513,107.55 and 155,447.70 is: 233,171.55
Step by Step Solution
- Step 1: Write the proportion equation
342,071.70 : 513,107.55 = 155,447.70 : x - Step 2: Convert to fraction form
342,071.70/513,107.55 = 155,447.70/x - Step 3: Cross multiply
342,071.70x = 513,107.55 × 155,447.70 - Step 4: Simplify right side
342,071.70x = 79,761,388,500.14 - Step 5: Solve for x
x = 79,761,388,500.14/342,071.70 - Step 6: Final answer
x = 233,171.55
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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.