Finding the Fourth Proportional to 420,778.08, 631,172.70 and 140,295.42
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Solution
The fourth proportional to 420,778.08, 631,172.70 and 140,295.42 is: 210,444.99
Step by Step Solution
- Step 1: Write the proportion equation
420,778.08 : 631,172.70 = 140,295.42 : x - Step 2: Convert to fraction form
420,778.08/631,172.70 = 140,295.42/x - Step 3: Cross multiply
420,778.08x = 631,172.70 × 140,295.42 - Step 4: Simplify right side
420,778.08x = 88,550,639,039.03 - Step 5: Solve for x
x = 88,550,639,039.03/420,778.08 - Step 6: Final answer
x = 210,444.99
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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.