Finding the Fourth Proportional to 303,763.10, 455,280.15 and 126,178.70
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Solution
The fourth proportional to 303,763.10, 455,280.15 and 126,178.70 is: 189,116.64
Step by Step Solution
- Step 1: Write the proportion equation
303,763.10 : 455,280.15 = 126,178.70 : x - Step 2: Convert to fraction form
303,763.10/455,280.15 = 126,178.70/x - Step 3: Cross multiply
303,763.10x = 455,280.15 × 126,178.70 - Step 4: Simplify right side
303,763.10x = 57,446,657,462.81 - Step 5: Solve for x
x = 57,446,657,462.81/303,763.10 - Step 6: Final answer
x = 189,116.64
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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.