Finding the Fourth Proportional to 207,709.24, 286,638.84 and 112,215.76
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Solution
The fourth proportional to 207,709.24, 286,638.84 and 112,215.76 is: 154,857.80
Step by Step Solution
- Step 1: Write the proportion equation
207,709.24 : 286,638.84 = 112,215.76 : x - Step 2: Convert to fraction form
207,709.24/286,638.84 = 112,215.76/x - Step 3: Cross multiply
207,709.24x = 286,638.84 × 112,215.76 - Step 4: Simplify right side
207,709.24x = 32,165,395,276.12 - Step 5: Solve for x
x = 32,165,395,276.12/207,709.24 - Step 6: Final answer
x = 154,857.80
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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.