Finding the Fourth Proportional to 217,248.82, 299,815.70 and 121,761.68
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Solution
The fourth proportional to 217,248.82, 299,815.70 and 121,761.68 is: 168,038.03
Step by Step Solution
- Step 1: Write the proportion equation
217,248.82 : 299,815.70 = 121,761.68 : x - Step 2: Convert to fraction form
217,248.82/299,815.70 = 121,761.68/x - Step 3: Cross multiply
217,248.82x = 299,815.70 × 121,761.68 - Step 4: Simplify right side
217,248.82x = 36,506,063,322.38 - Step 5: Solve for x
x = 36,506,063,322.38/217,248.82 - Step 6: Final answer
x = 168,038.03
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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.