Finding the Fourth Proportional to 217,281.87, 299,867.43 and 121,807.02
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Solution
The fourth proportional to 217,281.87, 299,867.43 and 121,807.02 is: 168,104.03
Step by Step Solution
- Step 1: Write the proportion equation
217,281.87 : 299,867.43 = 121,807.02 : x - Step 2: Convert to fraction form
217,281.87/299,867.43 = 121,807.02/x - Step 3: Cross multiply
217,281.87x = 299,867.43 × 121,807.02 - Step 4: Simplify right side
217,281.87x = 36,525,956,580.63 - Step 5: Solve for x
x = 36,525,956,580.63/217,281.87 - Step 6: Final answer
x = 168,104.03
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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.