Finding the Fourth Proportional to 221,395.08, 305,570.70 and 135,368.76
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Solution
The fourth proportional to 221,395.08, 305,570.70 and 135,368.76 is: 186,836.70
Step by Step Solution
- Step 1: Write the proportion equation
221,395.08 : 305,570.70 = 135,368.76 : x - Step 2: Convert to fraction form
221,395.08/305,570.70 = 135,368.76/x - Step 3: Cross multiply
221,395.08x = 305,570.70 × 135,368.76 - Step 4: Simplify right side
221,395.08x = 41,364,726,751.33 - Step 5: Solve for x
x = 41,364,726,751.33/221,395.08 - Step 6: Final answer
x = 186,836.70
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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.