Finding the Fourth Proportional to 431,485.74, 646,374.24 and 203,469.12
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Solution
The fourth proportional to 431,485.74, 646,374.24 and 203,469.12 is: 304,800.80
Step by Step Solution
- Step 1: Write the proportion equation
431,485.74 : 646,374.24 = 203,469.12 : x - Step 2: Convert to fraction form
431,485.74/646,374.24 = 203,469.12/x - Step 3: Cross multiply
431,485.74x = 646,374.24 × 203,469.12 - Step 4: Simplify right side
431,485.74x = 131,517,197,803.47 - Step 5: Solve for x
x = 131,517,197,803.47/431,485.74 - Step 6: Final answer
x = 304,800.80
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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.