Finding the Fourth Proportional to 331,494.23, 457,342.09 and 216,838.26
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Solution
The fourth proportional to 331,494.23, 457,342.09 and 216,838.26 is: 299,158.33
Step by Step Solution
- Step 1: Write the proportion equation
331,494.23 : 457,342.09 = 216,838.26 : x - Step 2: Convert to fraction form
331,494.23/457,342.09 = 216,838.26/x - Step 3: Cross multiply
331,494.23x = 457,342.09 × 216,838.26 - Step 4: Simplify right side
331,494.23x = 99,169,262,478.27 - Step 5: Solve for x
x = 99,169,262,478.27/331,494.23 - Step 6: Final answer
x = 299,158.33
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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.