Finding the Fourth Proportional to 430,163.20, 645,244.80 and 243,539.20
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Solution
The fourth proportional to 430,163.20, 645,244.80 and 243,539.20 is: 365,308.80
Step by Step Solution
- Step 1: Write the proportion equation
430,163.20 : 645,244.80 = 243,539.20 : x - Step 2: Convert to fraction form
430,163.20/645,244.80 = 243,539.20/x - Step 3: Cross multiply
430,163.20x = 645,244.80 × 243,539.20 - Step 4: Simplify right side
430,163.20x = 157,142,402,396.16 - Step 5: Solve for x
x = 157,142,402,396.16/430,163.20 - Step 6: Final answer
x = 365,308.80
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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.