Finding the Fourth Proportional to 221,457.99, 305,612.42 and 120,855.99
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Solution
The fourth proportional to 221,457.99, 305,612.42 and 120,855.99 is: 166,781.48
Step by Step Solution
- Step 1: Write the proportion equation
221,457.99 : 305,612.42 = 120,855.99 : x - Step 2: Convert to fraction form
221,457.99/305,612.42 = 120,855.99/x - Step 3: Cross multiply
221,457.99x = 305,612.42 × 120,855.99 - Step 4: Simplify right side
221,457.99x = 36,935,090,971.12 - Step 5: Solve for x
x = 36,935,090,971.12/221,457.99 - Step 6: Final answer
x = 166,781.48
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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.