Finding the Fourth Proportional to 211,280.85, 291,560.99 and 115,785.81
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Solution
The fourth proportional to 211,280.85, 291,560.99 and 115,785.81 is: 159,780.81
Step by Step Solution
- Step 1: Write the proportion equation
211,280.85 : 291,560.99 = 115,785.81 : x - Step 2: Convert to fraction form
211,280.85/291,560.99 = 115,785.81/x - Step 3: Cross multiply
211,280.85x = 291,560.99 × 115,785.81 - Step 4: Simplify right side
211,280.85x = 33,758,624,812.62 - Step 5: Solve for x
x = 33,758,624,812.62/211,280.85 - Step 6: Final answer
x = 159,780.81
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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.