Finding the Fourth Proportional to 312,898.12, 431,795.23 and 169,655.08
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Solution
The fourth proportional to 312,898.12, 431,795.23 and 169,655.08 is: 234,121.75
Step by Step Solution
- Step 1: Write the proportion equation
312,898.12 : 431,795.23 = 169,655.08 : x - Step 2: Convert to fraction form
312,898.12/431,795.23 = 169,655.08/x - Step 3: Cross multiply
312,898.12x = 431,795.23 × 169,655.08 - Step 4: Simplify right side
312,898.12x = 73,256,254,289.27 - Step 5: Solve for x
x = 73,256,254,289.27/312,898.12 - Step 6: Final answer
x = 234,121.75
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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.