Finding the Fourth Proportional to 211,509.62, 291,878.13 and 136,057.94
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Solution
The fourth proportional to 211,509.62, 291,878.13 and 136,057.94 is: 187,756.65
Step by Step Solution
- Step 1: Write the proportion equation
211,509.62 : 291,878.13 = 136,057.94 : x - Step 2: Convert to fraction form
211,509.62/291,878.13 = 136,057.94/x - Step 3: Cross multiply
211,509.62x = 291,878.13 × 136,057.94 - Step 4: Simplify right side
211,509.62x = 39,712,337,098.85 - Step 5: Solve for x
x = 39,712,337,098.85/211,509.62 - Step 6: Final answer
x = 187,756.65
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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.