Finding the Fourth Proportional to 223,780.08, 308,823.07 and 121,812.19
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Solution
The fourth proportional to 223,780.08, 308,823.07 and 121,812.19 is: 168,104.39
Step by Step Solution
- Step 1: Write the proportion equation
223,780.08 : 308,823.07 = 121,812.19 : x - Step 2: Convert to fraction form
223,780.08/308,823.07 = 121,812.19/x - Step 3: Cross multiply
223,780.08x = 308,823.07 × 121,812.19 - Step 4: Simplify right side
223,780.08x = 37,618,413,973.63 - Step 5: Solve for x
x = 37,618,413,973.63/223,780.08 - Step 6: Final answer
x = 168,104.39
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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.