Finding the Fourth Proportional to 320,367.48, 442,139.34 and 177,138.36
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Solution
The fourth proportional to 320,367.48, 442,139.34 and 177,138.36 is: 244,468.75
Step by Step Solution
- Step 1: Write the proportion equation
320,367.48 : 442,139.34 = 177,138.36 : x - Step 2: Convert to fraction form
320,367.48/442,139.34 = 177,138.36/x - Step 3: Cross multiply
320,367.48x = 442,139.34 × 177,138.36 - Step 4: Simplify right side
320,367.48x = 78,319,837,579.08 - Step 5: Solve for x
x = 78,319,837,579.08/320,367.48 - Step 6: Final answer
x = 244,468.75
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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.