Finding the Fourth Proportional to 420,720.23, 631,309.97 and 243,573.23
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Solution
The fourth proportional to 420,720.23, 631,309.97 and 243,573.23 is: 365,492.79
Step by Step Solution
- Step 1: Write the proportion equation
420,720.23 : 631,309.97 = 243,573.23 : x - Step 2: Convert to fraction form
420,720.23/631,309.97 = 243,573.23/x - Step 3: Cross multiply
420,720.23x = 631,309.97 × 243,573.23 - Step 4: Simplify right side
420,720.23x = 153,770,210,711.31 - Step 5: Solve for x
x = 153,770,210,711.31/420,720.23 - Step 6: Final answer
x = 365,492.79
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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.