Finding the Fourth Proportional to 221,207.55, 305,257.63 and 130,592.71
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Solution
The fourth proportional to 221,207.55, 305,257.63 and 130,592.71 is: 180,212.75
Step by Step Solution
- Step 1: Write the proportion equation
221,207.55 : 305,257.63 = 130,592.71 : x - Step 2: Convert to fraction form
221,207.55/305,257.63 = 130,592.71/x - Step 3: Cross multiply
221,207.55x = 305,257.63 × 130,592.71 - Step 4: Simplify right side
221,207.55x = 39,864,420,713.22 - Step 5: Solve for x
x = 39,864,420,713.22/221,207.55 - Step 6: Final answer
x = 180,212.75
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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.