Finding the Fourth Proportional to 194,485.02, 291,727.80 and 128,221.08
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Solution
The fourth proportional to 194,485.02, 291,727.80 and 128,221.08 is: 192,331.80
Step by Step Solution
- Step 1: Write the proportion equation
194,485.02 : 291,727.80 = 128,221.08 : x - Step 2: Convert to fraction form
194,485.02/291,727.80 = 128,221.08/x - Step 3: Cross multiply
194,485.02x = 291,727.80 × 128,221.08 - Step 4: Simplify right side
194,485.02x = 37,405,653,582.02 - Step 5: Solve for x
x = 37,405,653,582.02/194,485.02 - Step 6: Final answer
x = 192,331.80
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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.