Finding the Fourth Proportional to 315,511.20, 473,430.83 and 138,036.15
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Solution
The fourth proportional to 315,511.20, 473,430.83 and 138,036.15 is: 207,125.99
Step by Step Solution
- Step 1: Write the proportion equation
315,511.20 : 473,430.83 = 138,036.15 : x - Step 2: Convert to fraction form
315,511.20/473,430.83 = 138,036.15/x - Step 3: Cross multiply
315,511.20x = 473,430.83 × 138,036.15 - Step 4: Simplify right side
315,511.20x = 65,350,568,374.32 - Step 5: Solve for x
x = 65,350,568,374.32/315,511.20 - Step 6: Final answer
x = 207,125.99
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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.