Finding the Fourth Proportional to 221,347.44, 305,387.28 and 130,672.80
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Solution
The fourth proportional to 221,347.44, 305,387.28 and 130,672.80 is: 180,285.85
Step by Step Solution
- Step 1: Write the proportion equation
221,347.44 : 305,387.28 = 130,672.80 : x - Step 2: Convert to fraction form
221,347.44/305,387.28 = 130,672.80/x - Step 3: Cross multiply
221,347.44x = 305,387.28 × 130,672.80 - Step 4: Simplify right side
221,347.44x = 39,905,810,961.98 - Step 5: Solve for x
x = 39,905,810,961.98/221,347.44 - Step 6: Final answer
x = 180,285.85
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1.5x scale
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.