Finding the Fourth Proportional to 221,918.52, 306,247.56 and 121,316.52
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Solution
The fourth proportional to 221,918.52, 306,247.56 and 121,316.52 is: 167,416.80
Step by Step Solution
- Step 1: Write the proportion equation
221,918.52 : 306,247.56 = 121,316.52 : x - Step 2: Convert to fraction form
221,918.52/306,247.56 = 121,316.52/x - Step 3: Cross multiply
221,918.52x = 306,247.56 × 121,316.52 - Step 4: Simplify right side
221,918.52x = 37,152,888,237.69 - Step 5: Solve for x
x = 37,152,888,237.69/221,918.52 - Step 6: Final answer
x = 167,416.80
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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.