Finding the Fourth Proportional to 215,615.80, 323,423.70 and 97,420.60
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Solution
The fourth proportional to 215,615.80, 323,423.70 and 97,420.60 is: 146,130.90
Step by Step Solution
- Step 1: Write the proportion equation
215,615.80 : 323,423.70 = 97,420.60 : x - Step 2: Convert to fraction form
215,615.80/323,423.70 = 97,420.60/x - Step 3: Cross multiply
215,615.80x = 323,423.70 × 97,420.60 - Step 4: Simplify right side
215,615.80x = 31,508,130,908.22 - Step 5: Solve for x
x = 31,508,130,908.22/215,615.80 - Step 6: Final answer
x = 146,130.90
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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.