Finding the Fourth Proportional to 221,265.10, 305,256.63 and 128,069.53
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Solution
The fourth proportional to 221,265.10, 305,256.63 and 128,069.53 is: 176,684.32
Step by Step Solution
- Step 1: Write the proportion equation
221,265.10 : 305,256.63 = 128,069.53 : x - Step 2: Convert to fraction form
221,265.10/305,256.63 = 128,069.53/x - Step 3: Cross multiply
221,265.10x = 305,256.63 × 128,069.53 - Step 4: Simplify right side
221,265.10x = 39,094,073,133.48 - Step 5: Solve for x
x = 39,094,073,133.48/221,265.10 - Step 6: Final answer
x = 176,684.32
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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.