Finding the Fourth Proportional to 420,979.99, 631,943.23 and 168,438.64
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Solution
The fourth proportional to 420,979.99, 631,943.23 and 168,438.64 is: 252,847.31
Step by Step Solution
- Step 1: Write the proportion equation
420,979.99 : 631,943.23 = 168,438.64 : x - Step 2: Convert to fraction form
420,979.99/631,943.23 = 168,438.64/x - Step 3: Cross multiply
420,979.99x = 631,943.23 × 168,438.64 - Step 4: Simplify right side
420,979.99x = 106,443,658,218.41 - Step 5: Solve for x
x = 106,443,658,218.41/420,979.99 - Step 6: Final answer
x = 252,847.31
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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.