Finding the Fourth Proportional to 178,430.96, 245,616.60 and 154,220.80
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Solution
The fourth proportional to 178,430.96, 245,616.60 and 154,220.80 is: 212,290.45
Step by Step Solution
- Step 1: Write the proportion equation
178,430.96 : 245,616.60 = 154,220.80 : x - Step 2: Convert to fraction form
178,430.96/245,616.60 = 154,220.80/x - Step 3: Cross multiply
178,430.96x = 245,616.60 × 154,220.80 - Step 4: Simplify right side
178,430.96x = 37,879,188,545.28 - Step 5: Solve for x
x = 37,879,188,545.28/178,430.96 - Step 6: Final answer
x = 212,290.45
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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.