Finding the Fourth Proportional to 409,731.20, 614,683.20 and 129,276.80
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Solution
The fourth proportional to 409,731.20, 614,683.20 and 129,276.80 is: 193,942.46
Step by Step Solution
- Step 1: Write the proportion equation
409,731.20 : 614,683.20 = 129,276.80 : x - Step 2: Convert to fraction form
409,731.20/614,683.20 = 129,276.80/x - Step 3: Cross multiply
409,731.20x = 614,683.20 × 129,276.80 - Step 4: Simplify right side
409,731.20x = 79,464,277,109.76 - Step 5: Solve for x
x = 79,464,277,109.76/409,731.20 - Step 6: Final answer
x = 193,942.46
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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.