Finding the Fourth Proportional to 207,911.62, 286,917.64 and 117,267.30
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Solution
The fourth proportional to 207,911.62, 286,917.64 and 117,267.30 is: 161,828.65
Step by Step Solution
- Step 1: Write the proportion equation
207,911.62 : 286,917.64 = 117,267.30 : x - Step 2: Convert to fraction form
207,911.62/286,917.64 = 117,267.30/x - Step 3: Cross multiply
207,911.62x = 286,917.64 × 117,267.30 - Step 4: Simplify right side
207,911.62x = 33,646,056,965.17 - Step 5: Solve for x
x = 33,646,056,965.17/207,911.62 - Step 6: Final answer
x = 161,828.65
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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.