Finding the Fourth Proportional to 253,555.48, 349,911.93 and 138,838.96
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Solution
The fourth proportional to 253,555.48, 349,911.93 and 138,838.96 is: 191,600.70
Step by Step Solution
- Step 1: Write the proportion equation
253,555.48 : 349,911.93 = 138,838.96 : x - Step 2: Convert to fraction form
253,555.48/349,911.93 = 138,838.96/x - Step 3: Cross multiply
253,555.48x = 349,911.93 × 138,838.96 - Step 4: Simplify right side
253,555.48x = 48,581,408,452.79 - Step 5: Solve for x
x = 48,581,408,452.79/253,555.48 - Step 6: Final answer
x = 191,600.70
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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.