Finding the Fourth Proportional to 309,483.12, 427,162.68 and 188,691.02
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Solution
The fourth proportional to 309,483.12, 427,162.68 and 188,691.02 is: 260,439.93
Step by Step Solution
- Step 1: Write the proportion equation
309,483.12 : 427,162.68 = 188,691.02 : x - Step 2: Convert to fraction form
309,483.12/427,162.68 = 188,691.02/x - Step 3: Cross multiply
309,483.12x = 427,162.68 × 188,691.02 - Step 4: Simplify right side
309,483.12x = 80,601,761,795.13 - Step 5: Solve for x
x = 80,601,761,795.13/309,483.12 - Step 6: Final answer
x = 260,439.93
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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.