Finding the Fourth Proportional to 312,130.98, 430,739.37 and 168,893.55
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Solution
The fourth proportional to 312,130.98, 430,739.37 and 168,893.55 is: 233,072.35
Step by Step Solution
- Step 1: Write the proportion equation
312,130.98 : 430,739.37 = 168,893.55 : x - Step 2: Convert to fraction form
312,130.98/430,739.37 = 168,893.55/x - Step 3: Cross multiply
312,130.98x = 430,739.37 × 168,893.55 - Step 4: Simplify right side
312,130.98x = 72,749,101,324.06 - Step 5: Solve for x
x = 72,749,101,324.06/312,130.98 - Step 6: Final answer
x = 233,072.35
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.