Finding the Fourth Proportional to 221,912,408.06, 306,164,954.36 and 129,073,208.30
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Solution
The fourth proportional to 221,912,408.06, 306,164,954.36 and 129,073,208.30 is: 178,077,887.91
Step by Step Solution
- Step 1: Write the proportion equation
221,912,408.06 : 306,164,954.36 = 129,073,208.30 : x - Step 2: Convert to fraction form
221,912,408.06/306,164,954.36 = 129,073,208.30/x - Step 3: Cross multiply
221,912,408.06x = 306,164,954.36 × 129,073,208.30 - Step 4: Simplify right side
221,912,408.06x = 39,517,692,928,268,272 - Step 5: Solve for x
x = 39,517,692,928,268,272/221,912,408.06 - Step 6: Final answer
x = 178,077,887.91
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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.