Finding the Fourth Proportional to 211,115.50, 291,342.55 and 115,631.10
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Solution
The fourth proportional to 211,115.50, 291,342.55 and 115,631.10 is: 159,572.65
Step by Step Solution
- Step 1: Write the proportion equation
211,115.50 : 291,342.55 = 115,631.10 : x - Step 2: Convert to fraction form
211,115.50/291,342.55 = 115,631.10/x - Step 3: Cross multiply
211,115.50x = 291,342.55 × 115,631.10 - Step 4: Simplify right side
211,115.50x = 33,688,259,533.31 - Step 5: Solve for x
x = 33,688,259,533.31/211,115.50 - Step 6: Final answer
x = 159,572.65
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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.