Finding the Fourth Proportional to 396,072.50, 546,564.84 and 214,781.12
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Solution
The fourth proportional to 396,072.50, 546,564.84 and 214,781.12 is: 296,389.70
Step by Step Solution
- Step 1: Write the proportion equation
396,072.50 : 546,564.84 = 214,781.12 : x - Step 2: Convert to fraction form
396,072.50/546,564.84 = 214,781.12/x - Step 3: Cross multiply
396,072.50x = 546,564.84 × 214,781.12 - Step 4: Simplify right side
396,072.50x = 117,391,808,487.82 - Step 5: Solve for x
x = 117,391,808,487.82/396,072.50 - Step 6: Final answer
x = 296,389.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.