Finding the Fourth Proportional to 211,423.74, 316,513.53 and 141,128.70
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Solution
The fourth proportional to 211,423.74, 316,513.53 and 141,128.70 is: 211,277.80
Step by Step Solution
- Step 1: Write the proportion equation
211,423.74 : 316,513.53 = 141,128.70 : x - Step 2: Convert to fraction form
211,423.74/316,513.53 = 141,128.70/x - Step 3: Cross multiply
211,423.74x = 316,513.53 × 141,128.70 - Step 4: Simplify right side
211,423.74x = 44,669,143,021.31 - Step 5: Solve for x
x = 44,669,143,021.31/211,423.74 - Step 6: Final answer
x = 211,277.80
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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.