Finding the Fourth Proportional to 211,403.48, 291,734.58 and 115,909.94
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Solution
The fourth proportional to 211,403.48, 291,734.58 and 115,909.94 is: 159,954.50
Step by Step Solution
- Step 1: Write the proportion equation
211,403.48 : 291,734.58 = 115,909.94 : x - Step 2: Convert to fraction form
211,403.48/291,734.58 = 115,909.94/x - Step 3: Cross multiply
211,403.48x = 291,734.58 × 115,909.94 - Step 4: Simplify right side
211,403.48x = 33,814,937,663.73 - Step 5: Solve for x
x = 33,814,937,663.73/211,403.48 - Step 6: Final answer
x = 159,954.50
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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.