Finding the Fourth Proportional to 221,606.14, 305,840.55 and 136,721.02
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Solution
The fourth proportional to 221,606.14, 305,840.55 and 136,721.02 is: 188,689.86
Step by Step Solution
- Step 1: Write the proportion equation
221,606.14 : 305,840.55 = 136,721.02 : x - Step 2: Convert to fraction form
221,606.14/305,840.55 = 136,721.02/x - Step 3: Cross multiply
221,606.14x = 305,840.55 × 136,721.02 - Step 4: Simplify right side
221,606.14x = 41,814,831,953.36 - Step 5: Solve for x
x = 41,814,831,953.36/221,606.14 - Step 6: Final answer
x = 188,689.86
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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.