Finding the Fourth Proportional to 430,937.13, 646,405.70 and 135,449.13
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Solution
The fourth proportional to 430,937.13, 646,405.70 and 135,449.13 is: 203,173.70
Step by Step Solution
- Step 1: Write the proportion equation
430,937.13 : 646,405.70 = 135,449.13 : x - Step 2: Convert to fraction form
430,937.13/646,405.70 = 135,449.13/x - Step 3: Cross multiply
430,937.13x = 646,405.70 × 135,449.13 - Step 4: Simplify right side
430,937.13x = 87,555,089,692.04 - Step 5: Solve for x
x = 87,555,089,692.04/430,937.13 - Step 6: Final answer
x = 203,173.70
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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.