Finding the Fourth Proportional to 217,399.84, 299,884.68 and 136,699.60
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Solution
The fourth proportional to 217,399.84, 299,884.68 and 136,699.60 is: 188,565.53
Step by Step Solution
- Step 1: Write the proportion equation
217,399.84 : 299,884.68 = 136,699.60 : x - Step 2: Convert to fraction form
217,399.84/299,884.68 = 136,699.60/x - Step 3: Cross multiply
217,399.84x = 299,884.68 × 136,699.60 - Step 4: Simplify right side
217,399.84x = 40,994,115,802.13 - Step 5: Solve for x
x = 40,994,115,802.13/217,399.84 - Step 6: Final answer
x = 188,565.53
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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.