Finding the Fourth Proportional to 211,379.19, 291,703.26 and 115,886.55
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Solution
The fourth proportional to 211,379.19, 291,703.26 and 115,886.55 is: 159,923.43
Step by Step Solution
- Step 1: Write the proportion equation
211,379.19 : 291,703.26 = 115,886.55 : x - Step 2: Convert to fraction form
211,379.19/291,703.26 = 115,886.55/x - Step 3: Cross multiply
211,379.19x = 291,703.26 × 115,886.55 - Step 4: Simplify right side
211,379.19x = 33,804,484,425.15 - Step 5: Solve for x
x = 33,804,484,425.15/211,379.19 - Step 6: Final answer
x = 159,923.43
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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.