Finding the Fourth Proportional to 312,103.73, 430,703.14 and 168,863.76
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Solution
The fourth proportional to 312,103.73, 430,703.14 and 168,863.76 is: 233,031.99
Step by Step Solution
- Step 1: Write the proportion equation
312,103.73 : 430,703.14 = 168,863.76 : x - Step 2: Convert to fraction form
312,103.73/430,703.14 = 168,863.76/x - Step 3: Cross multiply
312,103.73x = 430,703.14 × 168,863.76 - Step 4: Simplify right side
312,103.73x = 72,730,151,664.21 - Step 5: Solve for x
x = 72,730,151,664.21/312,103.73 - Step 6: Final answer
x = 233,031.99
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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.