Finding the Fourth Proportional to 396,507.91, 547,166.16 and 215,215.94
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Solution
The fourth proportional to 396,507.91, 547,166.16 and 215,215.94 is: 296,989.99
Step by Step Solution
- Step 1: Write the proportion equation
396,507.91 : 547,166.16 = 215,215.94 : x - Step 2: Convert to fraction form
396,507.91/547,166.16 = 215,215.94/x - Step 3: Cross multiply
396,507.91x = 547,166.16 × 215,215.94 - Step 4: Simplify right side
396,507.91x = 117,758,878,355.99 - Step 5: Solve for x
x = 117,758,878,355.99/396,507.91 - Step 6: Final answer
x = 296,989.99
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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.