Finding the Fourth Proportional to 211,174.38, 291,420.99 and 115,678.98
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Solution
The fourth proportional to 211,174.38, 291,420.99 and 115,678.98 is: 159,637.18
Step by Step Solution
- Step 1: Write the proportion equation
211,174.38 : 291,420.99 = 115,678.98 : x - Step 2: Convert to fraction form
211,174.38/291,420.99 = 115,678.98/x - Step 3: Cross multiply
211,174.38x = 291,420.99 × 115,678.98 - Step 4: Simplify right side
211,174.38x = 33,711,282,873.79 - Step 5: Solve for x
x = 33,711,282,873.79/211,174.38 - Step 6: Final answer
x = 159,637.18
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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.