Finding the Fourth Proportional to 309,589.58, 427,238.44 and 173,653.70
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Solution
The fourth proportional to 309,589.58, 427,238.44 and 173,653.70 is: 239,644.81
Step by Step Solution
- Step 1: Write the proportion equation
309,589.58 : 427,238.44 = 173,653.70 : x - Step 2: Convert to fraction form
309,589.58/427,238.44 = 173,653.70/x - Step 3: Cross multiply
309,589.58x = 427,238.44 × 173,653.70 - Step 4: Simplify right side
309,589.58x = 74,191,535,888.23 - Step 5: Solve for x
x = 74,191,535,888.23/309,589.58 - Step 6: Final answer
x = 239,644.81
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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.