Finding the Fourth Proportional to 221,305.08, 305,397.06 and 129,433.26
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Solution
The fourth proportional to 221,305.08, 305,397.06 and 129,433.26 is: 178,615.59
Step by Step Solution
- Step 1: Write the proportion equation
221,305.08 : 305,397.06 = 129,433.26 : x - Step 2: Convert to fraction form
221,305.08/305,397.06 = 129,433.26/x - Step 3: Cross multiply
221,305.08x = 305,397.06 × 129,433.26 - Step 4: Simplify right side
221,305.08x = 39,528,537,070.22 - Step 5: Solve for x
x = 39,528,537,070.22/221,305.08 - Step 6: Final answer
x = 178,615.59
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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.