Finding the Fourth Proportional to 211,303.20, 291,605.80 and 115,809.88
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Solution
The fourth proportional to 211,303.20, 291,605.80 and 115,809.88 is: 159,821.68
Step by Step Solution
- Step 1: Write the proportion equation
211,303.20 : 291,605.80 = 115,809.88 : x - Step 2: Convert to fraction form
211,303.20/291,605.80 = 115,809.88/x - Step 3: Cross multiply
211,303.20x = 291,605.80 × 115,809.88 - Step 4: Simplify right side
211,303.20x = 33,770,832,705.30 - Step 5: Solve for x
x = 33,770,832,705.30/211,303.20 - Step 6: Final answer
x = 159,821.68
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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.