Finding the Fourth Proportional to 222,972,230.12, 307,632,258.27 and 128,852,088.06
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Solution
The fourth proportional to 222,972,230.12, 307,632,258.27 and 128,852,088.06 is: 177,775,765.22
Step by Step Solution
- Step 1: Write the proportion equation
222,972,230.12 : 307,632,258.27 = 128,852,088.06 : x - Step 2: Convert to fraction form
222,972,230.12/307,632,258.27 = 128,852,088.06/x - Step 3: Cross multiply
222,972,230.12x = 307,632,258.27 × 128,852,088.06 - Step 4: Simplify right side
222,972,230.12x = 39,639,058,831,783,864 - Step 5: Solve for x
x = 39,639,058,831,783,864/222,972,230.12 - Step 6: Final answer
x = 177,775,765.22
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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.