Finding the Fourth Proportional to 352,709.97, 486,408.20 and 272,009.67
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Solution
The fourth proportional to 352,709.97, 486,408.20 and 272,009.67 is: 375,117.65
Step by Step Solution
- Step 1: Write the proportion equation
352,709.97 : 486,408.20 = 272,009.67 : x - Step 2: Convert to fraction form
352,709.97/486,408.20 = 272,009.67/x - Step 3: Cross multiply
352,709.97x = 486,408.20 × 272,009.67 - Step 4: Simplify right side
352,709.97x = 132,307,733,967.29 - Step 5: Solve for x
x = 132,307,733,967.29/352,709.97 - Step 6: Final answer
x = 375,117.65
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1.5x scale
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.