Finding the Fourth Proportional to 415,998.05, 623,998.89 and 131,689.99
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Solution
The fourth proportional to 415,998.05, 623,998.89 and 131,689.99 is: 197,535.56
Step by Step Solution
- Step 1: Write the proportion equation
415,998.05 : 623,998.89 = 131,689.99 : x - Step 2: Convert to fraction form
415,998.05/623,998.89 = 131,689.99/x - Step 3: Cross multiply
415,998.05x = 623,998.89 × 131,689.99 - Step 4: Simplify right side
415,998.05x = 82,174,406,024.11 - Step 5: Solve for x
x = 82,174,406,024.11/415,998.05 - Step 6: Final answer
x = 197,535.56
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1.5x scale
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.