Finding the Fourth Proportional to 430,583.45, 646,013.48 and 131,121.99
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Solution
The fourth proportional to 430,583.45, 646,013.48 and 131,121.99 is: 196,725.10
Step by Step Solution
- Step 1: Write the proportion equation
430,583.45 : 646,013.48 = 131,121.99 : x - Step 2: Convert to fraction form
430,583.45/646,013.48 = 131,121.99/x - Step 3: Cross multiply
430,583.45x = 646,013.48 × 131,121.99 - Step 4: Simplify right side
430,583.45x = 84,706,572,408.82 - Step 5: Solve for x
x = 84,706,572,408.82/430,583.45 - Step 6: Final answer
x = 196,725.10
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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.