Finding the Fourth Proportional to 402,861.20, 604,378.20 and 122,406.80
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Solution
The fourth proportional to 402,861.20, 604,378.20 and 122,406.80 is: 183,636.45
Step by Step Solution
- Step 1: Write the proportion equation
402,861.20 : 604,378.20 = 122,406.80 : x - Step 2: Convert to fraction form
402,861.20/604,378.20 = 122,406.80/x - Step 3: Cross multiply
402,861.20x = 604,378.20 × 122,406.80 - Step 4: Simplify right side
402,861.20x = 73,980,001,451.76 - Step 5: Solve for x
x = 73,980,001,451.76/402,861.20 - Step 6: Final answer
x = 183,636.45
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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.