Finding the Fourth Proportional to 289,030.12, 398,877.06 and 161,698.12
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Solution
The fourth proportional to 289,030.12, 398,877.06 and 161,698.12 is: 223,152.07
Step by Step Solution
- Step 1: Write the proportion equation
289,030.12 : 398,877.06 = 161,698.12 : x - Step 2: Convert to fraction form
289,030.12/398,877.06 = 161,698.12/x - Step 3: Cross multiply
289,030.12x = 398,877.06 × 161,698.12 - Step 4: Simplify right side
289,030.12x = 64,497,670,713.13 - Step 5: Solve for x
x = 64,497,670,713.13/289,030.12 - Step 6: Final answer
x = 223,152.07
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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.