Finding the Fourth Proportional to 213,162,727.09, 294,041,801.58 and 128,330,839.68
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Solution
The fourth proportional to 213,162,727.09, 294,041,801.58 and 128,330,839.68 is: 177,022,652.19
Step by Step Solution
- Step 1: Write the proportion equation
213,162,727.09 : 294,041,801.58 = 128,330,839.68 : x - Step 2: Convert to fraction form
213,162,727.09/294,041,801.58 = 128,330,839.68/x - Step 3: Cross multiply
213,162,727.09x = 294,041,801.58 × 128,330,839.68 - Step 4: Simplify right side
213,162,727.09x = 37,734,631,296,311,136 - Step 5: Solve for x
x = 37,734,631,296,311,136/213,162,727.09 - Step 6: Final answer
x = 177,022,652.19
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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.