Finding the Fourth Proportional to 342,021.20, 513,031.80 and 306,591.80
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Solution
The fourth proportional to 342,021.20, 513,031.80 and 306,591.80 is: 459,887.70
Step by Step Solution
- Step 1: Write the proportion equation
342,021.20 : 513,031.80 = 306,591.80 : x - Step 2: Convert to fraction form
342,021.20/513,031.80 = 306,591.80/x - Step 3: Cross multiply
342,021.20x = 513,031.80 × 306,591.80 - Step 4: Simplify right side
342,021.20x = 157,291,343,019.24 - Step 5: Solve for x
x = 157,291,343,019.24/342,021.20 - Step 6: Final answer
x = 459,887.70
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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.