Finding the Fourth Proportional to 266,117.20, 399,175.80 and 126,149.20
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Solution
The fourth proportional to 266,117.20, 399,175.80 and 126,149.20 is: 189,223.80
Step by Step Solution
- Step 1: Write the proportion equation
266,117.20 : 399,175.80 = 126,149.20 : x - Step 2: Convert to fraction form
266,117.20/399,175.80 = 126,149.20/x - Step 3: Cross multiply
266,117.20x = 399,175.80 × 126,149.20 - Step 4: Simplify right side
266,117.20x = 50,355,707,829.36 - Step 5: Solve for x
x = 50,355,707,829.36/266,117.20 - Step 6: Final answer
x = 189,223.80
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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.