Finding the Fourth Proportional to 221,969.47, 306,319.05 and 121,367.47
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Solution
The fourth proportional to 221,969.47, 306,319.05 and 121,367.47 is: 167,487.75
Step by Step Solution
- Step 1: Write the proportion equation
221,969.47 : 306,319.05 = 121,367.47 : x - Step 2: Convert to fraction form
221,969.47/306,319.05 = 121,367.47/x - Step 3: Cross multiply
221,969.47x = 306,319.05 × 121,367.47 - Step 4: Simplify right side
221,969.47x = 37,177,168,111.30 - Step 5: Solve for x
x = 37,177,168,111.30/221,969.47 - Step 6: Final answer
x = 167,487.75
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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.