Finding the Fourth Proportional to 231,461.34, 319,403.76 and 129,467.07
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Solution
The fourth proportional to 231,461.34, 319,403.76 and 129,467.07 is: 178,657.35
Step by Step Solution
- Step 1: Write the proportion equation
231,461.34 : 319,403.76 = 129,467.07 : x - Step 2: Convert to fraction form
231,461.34/319,403.76 = 129,467.07/x - Step 3: Cross multiply
231,461.34x = 319,403.76 × 129,467.07 - Step 4: Simplify right side
231,461.34x = 41,352,268,954.18 - Step 5: Solve for x
x = 41,352,268,954.18/231,461.34 - Step 6: Final answer
x = 178,657.35
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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.