Finding the Fourth Proportional to 229,316.39, 316,485.78 and 138,672.99
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Solution
The fourth proportional to 229,316.39, 316,485.78 and 138,672.99 is: 191,386.37
Step by Step Solution
- Step 1: Write the proportion equation
229,316.39 : 316,485.78 = 138,672.99 : x - Step 2: Convert to fraction form
229,316.39/316,485.78 = 138,672.99/x - Step 3: Cross multiply
229,316.39x = 316,485.78 × 138,672.99 - Step 4: Simplify right side
229,316.39x = 43,888,029,405.08 - Step 5: Solve for x
x = 43,888,029,405.08/229,316.39 - Step 6: Final answer
x = 191,386.37
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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.