Finding the Fourth Proportional to 309,815.28, 427,587.61 and 173,857.23
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Solution
The fourth proportional to 309,815.28, 427,587.61 and 173,857.23 is: 239,946.84
Step by Step Solution
- Step 1: Write the proportion equation
309,815.28 : 427,587.61 = 173,857.23 : x - Step 2: Convert to fraction form
309,815.28/427,587.61 = 173,857.23/x - Step 3: Cross multiply
309,815.28x = 427,587.61 × 173,857.23 - Step 4: Simplify right side
309,815.28x = 74,339,197,456.92 - Step 5: Solve for x
x = 74,339,197,456.92/309,815.28 - Step 6: Final answer
x = 239,946.84
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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.