Finding the Fourth Proportional to 208,639,204.80, 312,660,208.80 and 153,622,449.60
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Solution
The fourth proportional to 208,639,204.80, 312,660,208.80 and 153,622,449.60 is: 230,213,814.39
Step by Step Solution
- Step 1: Write the proportion equation
208,639,204.80 : 312,660,208.80 = 153,622,449.60 : x - Step 2: Convert to fraction form
208,639,204.80/312,660,208.80 = 153,622,449.60/x - Step 3: Cross multiply
208,639,204.80x = 312,660,208.80 × 153,622,449.60 - Step 4: Simplify right side
208,639,204.80x = 48,031,627,168,303,480 - Step 5: Solve for x
x = 48,031,627,168,303,480/208,639,204.80 - Step 6: Final answer
x = 230,213,814.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.